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In reviewing my syslog, I've found that 99% of it consists of UFW BLOCK statements from 3 or 4 IP's (see below; edited for space). Is this normal? What do these entries mean? If they are safe, how can I fix or prevent them from being written to the log? In searching this issue it appears that this is somehow related to multicasting, which I know nothing about. I have already tried adding inbound/outbound access for 224.0.0.0/24 for UDP and then restarting UFW to no avail.

UFW Settings

Logging: on (low)
Default: deny (incoming), allow (outgoing), disabled (routed)
New profiles: skip

To                         Action      From
--                         ------      ----
80,443/tcp (WWW Full)      ALLOW IN    Anywhere
5900/tcp (VNC)             ALLOW IN    Anywhere
22/tcp (SSH)               ALLOW IN    Anywhere
5901                       ALLOW IN    Anywhere
3306                       ALLOW IN    192.168.0.0/16
631 (CUPS)                 ALLOW IN    Anywhere
224.0.0.0/24/udp           ALLOW IN    Anywhere
80,443/tcp (WWW Full (v6)) ALLOW IN    Anywhere (v6)
5900/tcp (VNC (v6))        ALLOW IN    Anywhere (v6)
22/tcp (SSH (v6))          ALLOW IN    Anywhere (v6)
5901 (v6)                  ALLOW IN    Anywhere (v6)
631 (CUPS (v6))            ALLOW IN    Anywhere (v6)
ff02::1/udp                ALLOW IN    Anywhere (v6)

224.0.0.0/24/udp           ALLOW OUT   Anywhere
ff02::1/udp                ALLOW OUT   Anywhere (v6)

Syslog

Jul 22 07:41:07 rpiserver kernel: [200897.130231] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:01:f4:f5:e8:75:2c:91:08:00 SRC=192.168.11.1 DST=224.0.0.1 LEN=28 TOS=0x00 PREC=0xC0 TTL=1 ID=42871 PROTO=2 
Jul 22 07:41:09 rpiserver kernel: [200898.353921] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:fb:00:1b:b1:89:eb:df:08:00 SRC=192.168.11.36 DST=224.0.0.251 LEN=32 TOS=0x00 PREC=0x00 TTL=1 ID=30287 PROTO=2 
Jul 22 07:41:52 rpiserver kernel: [200941.466217] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:fb:fc:d8:48:3c:d0:fb:08:00 SRC=192.168.11.60 DST=224.0.0.251 LEN=32 TOS=0x00 PREC=0x00 TTL=1 ID=58252 PROTO=2 
Jul 22 07:41:52 rpiserver kernel: [200941.466345] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:fb:f4:f5:e8:75:2c:91:08:00 SRC=192.168.11.1 DST=224.0.0.251 LEN=28 TOS=0x00 PREC=0xC0 TTL=1 ID=5859 PROTO=2 
Jul 22 07:41:53 rpiserver kernel: [200942.487756] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:fb:b8:27:eb:cf:60:b6:08:00 SRC=192.168.11.140 DST=224.0.0.251 LEN=32 TOS=0x00 PREC=0xC0 TTL=1 ID=0 DF PROTO=2 
Jul 22 07:43:12 rpiserver kernel: [201021.848041] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:01:f4:f5:e8:75:2c:91:08:00 SRC=192.168.11.1 DST=224.0.0.1 LEN=28 TOS=0x00 PREC=0xC0 TTL=1 ID=42872 PROTO=2 
Jul 22 07:43:19 rpiserver kernel: [201028.200702] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:fb:b8:27:eb:cf:60:b6:08:00 SRC=192.168.11.140 DST=224.0.0.251 LEN=32 TOS=0x00 PREC=0xC0 TTL=1 ID=0 DF PROTO=2 
Jul 22 07:43:54 rpiserver kernel: [201064.139493] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:fb:f0:03:8c:d4:ae:af:08:00 SRC=192.168.11.129 DST=224.0.0.251 LEN=32 TOS=0x00 PREC=0x00 TTL=1 ID=58854 PROTO=2 
Jul 22 07:45:17 rpiserver kernel: [201146.776542] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:01:f4:f5:e8:75:2c:91:08:00 SRC=192.168.11.1 DST=224.0.0.1 LEN=28 TOS=0x00 PREC=0xC0 TTL=1 ID=42873 PROTO=2 
Jul 22 07:45:18 rpiserver kernel: [201147.390831] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:fb:00:1b:b1:89:eb:df:08:00 SRC=192.168.11.36 DST=224.0.0.251 LEN=32 TOS=0x00 PREC=0x00 TTL=1 ID=30307 PROTO=2 
Jul 22 07:45:26 rpiserver kernel: [201155.174401] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:fb:30:52:cb:ae:19:48:08:00 SRC=192.168.11.30 DST=224.0.0.251 LEN=32 TOS=0x00 PREC=0x00 TTL=1 ID=12040 PROTO=2 
Jul 22 07:47:23 rpiserver kernel: [201272.217144] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:01:f4:f5:e8:75:2c:91:08:00 SRC=192.168.11.1 DST=224.0.0.1 LEN=28 TOS=0x00 PREC=0xC0 TTL=1 ID=42874 PROTO=2 
Jul 22 07:47:28 rpiserver kernel: [201277.951599] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:fb:b8:27:eb:cf:60:b6:08:00 SRC=192.168.11.140 DST=224.0.0.251 LEN=32 TOS=0x00 PREC=0xC0 TTL=1 ID=0 DF PROTO=2 
Jul 22 07:47:29 rpiserver kernel: [201278.361758] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:fb:00:1b:b1:89:eb:df:08:00 SRC=192.168.11.36 DST=224.0.0.251 LEN=32 TOS=0x00 PREC=0x00 TTL=1 ID=30319 PROTO=2 
Jul 22 07:48:15 rpiserver kernel: [201324.953364] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:fb:fc:d8:48:46:ce:ec:08:00 SRC=192.168.11.8 DST=224.0.0.251 LEN=32 TOS=0x00 PREC=0x00 TTL=1 ID=60685 PROTO=2 
Jul 22 07:49:27 rpiserver kernel: [201397.151998] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:01:f4:f5:e8:75:2c:91:08:00 SRC=192.168.11.1 DST=224.0.0.1 LEN=28 TOS=0x00 PREC=0xC0 TTL=1 ID=42875 PROTO=2 
Jul 22 07:49:37 rpiserver kernel: [201406.566453] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:fb:b8:27:eb:cf:60:b6:08:00 SRC=192.168.11.140 DST=224.0.0.251 LEN=32 TOS=0x00 PREC=0xC0 TTL=1 ID=0 DF PROTO=2 
Jul 22 07:51:11 rpiserver kernel: [201500.980593] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:fb:cc:20:e8:21:ca:c8:08:00 SRC=192.168.11.175 DST=224.0.0.251 LEN=32 TOS=0x00 PREC=0x00 TTL=1 ID=27258 PROTO=2 
Jul 22 07:51:33 rpiserver kernel: [201522.278789] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:01:f4:f5:e8:75:2c:91:08:00 SRC=192.168.11.1 DST=224.0.0.1 LEN=28 TOS=0x00 PREC=0xC0 TTL=1 ID=42876 PROTO=2 
Jul 22 07:51:35 rpiserver kernel: [201524.329279] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:fb:30:52:cb:ae:19:48:08:00 SRC=192.168.11.30 DST=224.0.0.251 LEN=32 TOS=0x00 PREC=0x00 TTL=1 ID=12088 PROTO=2 
Jul 22 07:53:37 rpiserver kernel: [201647.103024] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:01:f4:f5:e8:75:2c:91:08:00 SRC=192.168.11.1 DST=224.0.0.1 LEN=28 TOS=0x00 PREC=0xC0 TTL=1 ID=42877 PROTO=2 
Jul 22 07:53:41 rpiserver kernel: [201650.795068] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:fb:30:52:cb:ae:19:48:08:00 SRC=192.168.11.30 DST=224.0.0.251 LEN=32 TOS=0x00 PREC=0x00 TTL=1 ID=12102 PROTO=2 
Jul 22 07:55:42 rpiserver kernel: [201772.033729] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:01:f4:f5:e8:75:2c:91:08:00 SRC=192.168.11.1 DST=224.0.0.1 LEN=28 TOS=0x00 PREC=0xC0 TTL=1 ID=42878 PROTO=2 
Jul 22 07:55:46 rpiserver kernel: [201775.314779] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:fb:30:52:cb:ae:19:48:08:00 SRC=192.168.11.30 DST=224.0.0.251 LEN=32 TOS=0x00 PREC=0x00 TTL=1 ID=12113 PROTO=2 
Jul 22 07:55:47 rpiserver kernel: [201776.536158] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:fb:00:1b:b1:89:eb:df:08:00 SRC=192.168.11.36 DST=224.0.0.251 LEN=32 TOS=0x00 PREC=0x00 TTL=1 ID=30372 PROTO=2 
Jul 22 07:57:47 rpiserver kernel: [201897.166916] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:01:f4:f5:e8:75:2c:91:08:00 SRC=192.168.11.1 DST=224.0.0.1 LEN=28 TOS=0x00 PREC=0xC0 TTL=1 ID=42879 PROTO=2 
Jul 22 07:57:50 rpiserver kernel: [201899.625495] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:fb:30:52:cb:ae:19:48:08:00 SRC=192.168.11.30 DST=224.0.0.251 LEN=32 TOS=0x00 PREC=0x00 TTL=1 ID=12126 PROTO=2 
Jul 22 07:59:14 rpiserver kernel: [201984.104811] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:fb:cc:20:e8:21:ca:c8:08:00 SRC=192.168.11.175 DST=224.0.0.251 LEN=32 TOS=0x00 PREC=0x00 TTL=1 ID=61713 PROTO=2 
Jul 22 07:59:53 rpiserver kernel: [202022.300223] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:01:f4:f5:e8:75:2c:91:08:00 SRC=192.168.11.1 DST=224.0.0.1 LEN=28 TOS=0x00 PREC=0xC0 TTL=1 ID=42880 PROTO=2 
Jul 22 07:59:55 rpiserver kernel: [202024.754811] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:fb:30:52:cb:ae:19:48:08:00 SRC=192.168.11.30 DST=224.0.0.251 LEN=32 TOS=0x00 PREC=0x00 TTL=1 ID=12143 PROTO=2 
Jul 22 08:01:41 rpiserver kernel: [202130.640971] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:fb:f4:f5:e8:75:2c:91:08:00 SRC=192.168.11.1 DST=224.0.0.251 LEN=28 TOS=0x00 PREC=0xC0 TTL=1 ID=5860 PROTO=2 
Jul 22 08:01:41 rpiserver kernel: [202130.641242] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:fb:fc:d8:48:46:ce:ec:08:00 SRC=192.168.11.8 DST=224.0.0.251 LEN=32 TOS=0x00 PREC=0x00 TTL=1 ID=13207 PROTO=2 
Jul 22 08:01:57 rpiserver kernel: [202147.126435] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:01:f4:f5:e8:75:2c:91:08:00 SRC=192.168.11.1 DST=224.0.0.1 LEN=28 TOS=0x00 PREC=0xC0 TTL=1 ID=42881 PROTO=2 
Jul 22 08:01:58 rpiserver kernel: [202147.331561] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:fb:f4:f5:d8:b1:4e:26:08:00 SRC=192.168.11.104 DST=224.0.0.251 LEN=32 TOS=0x00 PREC=0xC0 TTL=1 ID=0 DF PROTO=2 
Jul 22 08:04:03 rpiserver kernel: [202272.362170] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:01:f4:f5:e8:75:2c:91:08:00 SRC=192.168.11.1 DST=224.0.0.1 LEN=28 TOS=0x00 PREC=0xC0 TTL=1 ID=42882 PROTO=2 
Jul 22 08:04:06 rpiserver kernel: [202275.229425] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:fb:f4:f5:d8:b1:4e:26:08:00 SRC=192.168.11.104 DST=224.0.0.251 LEN=32 TOS=0x00 PREC=0xC0 TTL=1 ID=0 DF PROTO=2 
Jul 22 08:06:07 rpiserver kernel: [202396.983416] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:01:f4:f5:e8:75:2c:91:08:00 SRC=192.168.11.1 DST=224.0.0.1 LEN=28 TOS=0x00 PREC=0xC0 TTL=1 ID=42883 PROTO=2 
Jul 22 08:06:08 rpiserver kernel: [202397.190250] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:fb:30:52:cb:ae:19:48:08:00 SRC=192.168.11.30 DST=224.0.0.251 LEN=32 TOS=0x00 PREC=0x00 TTL=1 ID=12187 PROTO=2 
Jul 22 08:07:19 rpiserver kernel: [202468.460367] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:fb:cc:20:e8:21:ca:c8:08:00 SRC=192.168.11.175 DST=224.0.0.251 LEN=32 TOS=0x00 PREC=0x00 TTL=1 ID=63754 PROTO=2 
Jul 22 08:08:13 rpiserver kernel: [202522.321647] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:01:f4:f5:e8:75:2c:91:08:00 SRC=192.168.11.1 DST=224.0.0.1 LEN=28 TOS=0x00 PREC=0xC0 TTL=1 ID=42884 PROTO=2 
Jul 22 08:08:13 rpiserver kernel: [202522.937013] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:fb:b8:27:eb:cf:60:b6:08:00 SRC=192.168.11.140 DST=224.0.0.251 LEN=32 TOS=0x00 PREC=0xC0 TTL=1 ID=0 DF PROTO=2 
Jul 22 08:08:16 rpiserver kernel: [202525.598293] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:fb:cc:20:e8:21:ca:c8:08:00 SRC=192.168.11.175 DST=224.0.0.251 LEN=32 TOS=0x00 PREC=0x00 TTL=1 ID=17827 PROTO=2 
Jul 22 08:08:49 rpiserver kernel: [202558.674836] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:fb:f4:f5:e8:75:2c:91:08:00 SRC=192.168.11.1 DST=224.0.0.251 LEN=28 TOS=0x00 PREC=0xC0 TTL=1 ID=5861 PROTO=2 
Jul 22 08:08:50 rpiserver kernel: [202559.288053] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:fb:30:52:cb:ae:19:48:08:00 SRC=192.168.11.30 DST=224.0.0.251 LEN=32 TOS=0x00 PREC=0x00 TTL=1 ID=12200 PROTO=2 
Jul 22 08:09:01 rpiserver CRON[23924]: (root) CMD (  [ -x /usr/lib/php5/sessionclean ] && /usr/lib/php5/sessionclean)
Jul 22 08:09:01 rpiserver CRON[23932]: (root) CMD (  [ -x /usr/lib/php/sessionclean ] && if [ ! -d /run/systemd/system ]; then /usr/lib/php/sessionclean; fi)
Jul 22 08:09:03 rpiserver systemd[1]: Starting Clean php session files...
Jul 22 08:09:03 rpiserver systemd[1]: Started Clean php session files.
Jul 22 08:10:18 rpiserver kernel: [202647.352331] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:01:f4:f5:e8:75:2c:91:08:00 SRC=192.168.11.1 DST=224.0.0.1 LEN=28 TOS=0x00 PREC=0xC0 TTL=1 ID=42885 PROTO=2 
Jul 22 08:10:19 rpiserver kernel: [202648.786151] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:fb:b8:27:eb:cf:60:b6:08:00 SRC=192.168.11.140 DST=224.0.0.251 LEN=32 TOS=0x00 PREC=0xC0 TTL=1 ID=0 DF PROTO=2 
Jul 22 08:10:48 rpiserver kernel: [202677.762409] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:fb:cc:20:e8:21:ca:c8:08:00 SRC=192.168.11.175 DST=224.0.0.251 LEN=32 TOS=0x00 PREC=0x00 TTL=1 ID=36218 PROTO=2 
Jul 22 08:11:31 rpiserver kernel: [202720.261915] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:fb:fc:d8:48:3c:d0:fb:08:00 SRC=192.168.11.60 DST=224.0.0.251 LEN=32 TOS=0x00 PREC=0x00 TTL=1 ID=16506 PROTO=2 
Jul 22 08:12:05 rpiserver kernel: [202754.567044] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:fb:f4:f5:e8:75:2c:91:08:00 SRC=192.168.11.1 DST=224.0.0.251 LEN=28 TOS=0x00 PREC=0xC0 TTL=1 ID=5862 PROTO=2 
Jul 22 08:12:05 rpiserver kernel: [202754.567170] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:fb:fc:d8:48:3c:d0:fb:08:00 SRC=192.168.11.60 DST=224.0.0.251 LEN=32 TOS=0x00 PREC=0x00 TTL=1 ID=12999 PROTO=2 
Jul 22 08:12:22 rpiserver kernel: [202772.076072] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:01:f4:f5:e8:75:2c:91:08:00 SRC=192.168.11.1 DST=224.0.0.1 LEN=28 TOS=0x00 PREC=0xC0 TTL=1 ID=42886 PROTO=2 
Jul 22 08:12:23 rpiserver kernel: [202772.278091] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:fb:30:52:cb:ae:19:48:08:00 SRC=192.168.11.30 DST=224.0.0.251 LEN=32 TOS=0x00 PREC=0x00 TTL=1 ID=12238 PROTO=2 
Jul 22 08:14:28 rpiserver kernel: [202897.414683] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:01:f4:f5:e8:75:2c:91:08:00 SRC=192.168.11.1 DST=224.0.0.1 LEN=28 TOS=0x00 PREC=0xC0 TTL=1 ID=42887 PROTO=2 
Jul 22 08:14:30 rpiserver kernel: [202899.465660] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:fb:f4:f5:d8:b1:4e:26:08:00 SRC=192.168.11.104 DST=224.0.0.251 LEN=32 TOS=0x00 PREC=0xC0 TTL=1 ID=0 DF PROTO=2 
Jul 22 08:16:33 rpiserver kernel: [203022.240598] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:01:f4:f5:e8:75:2c:91:08:00 SRC=192.168.11.1 DST=224.0.0.1 LEN=28 TOS=0x00 PREC=0xC0 TTL=1 ID=42888 PROTO=2 
Jul 22 08:16:35 rpiserver kernel: [203024.698275] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:fb:00:1b:b1:89:eb:df:08:00 SRC=192.168.11.36 DST=224.0.0.251 LEN=32 TOS=0x00 PREC=0x00 TTL=1 ID=30490 PROTO=2 
Jul 22 08:18:38 rpiserver kernel: [203147.375047] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:01:f4:f5:e8:75:2c:91:08:00 SRC=192.168.11.1 DST=224.0.0.1 LEN=28 TOS=0x00 PREC=0xC0 TTL=1 ID=42889 PROTO=2 
Jul 22 08:18:39 rpiserver kernel: [203148.193364] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:fb:30:52:cb:ae:19:48:08:00 SRC=192.168.11.30 DST=224.0.0.251 LEN=32 TOS=0x00 PREC=0x00 TTL=1 ID=12277 PROTO=2 
Jul 22 08:20:43 rpiserver kernel: [203272.507279] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:01:f4:f5:e8:75:2c:91:08:00 SRC=192.168.11.1 DST=224.0.0.1 LEN=28 TOS=0x00 PREC=0xC0 TTL=1 ID=42890 PROTO=2 
Jul 22 08:20:43 rpiserver kernel: [203272.711947] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:fb:30:52:cb:ae:19:48:08:00 SRC=192.168.11.30 DST=224.0.0.251 LEN=32 TOS=0x00 PREC=0x00 TTL=1 ID=12285 PROTO=2 
Jul 22 08:22:48 rpiserver kernel: [203397.439781] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:01:f4:f5:e8:75:2c:91:08:00 SRC=192.168.11.1 DST=224.0.0.1 LEN=28 TOS=0x00 PREC=0xC0 TTL=1 ID=42891 PROTO=2 
Jul 22 08:22:49 rpiserver kernel: [203398.869541] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:fb:f4:f5:d8:b1:4e:26:08:00 SRC=192.168.11.104 DST=224.0.0.251 LEN=32 TOS=0x00 PREC=0xC0 TTL=1 ID=0 DF PROTO=2 
Jul 22 08:24:52 rpiserver kernel: [203521.852334] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:01:f4:f5:e8:75:2c:91:08:00 SRC=192.168.11.1 DST=224.0.0.1 LEN=28 TOS=0x00 PREC=0xC0 TTL=1 ID=42892 PROTO=2 
Jul 22 08:24:53 rpiserver kernel: [203523.081228] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:fb:b8:27:eb:cf:60:b6:08:00 SRC=192.168.11.140 DST=224.0.0.251 LEN=32 TOS=0x00 PREC=0xC0 TTL=1 ID=0 DF PROTO=2 
Jul 22 08:26:58 rpiserver kernel: [203647.397325] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:01:f4:f5:e8:75:2c:91:08:00 SRC=192.168.11.1 DST=224.0.0.1 LEN=28 TOS=0x00 PREC=0xC0 TTL=1 ID=42893 PROTO=2 
Jul 22 08:26:58 rpiserver kernel: [203647.804807] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:fb:30:52:cb:ae:19:48:08:00 SRC=192.168.11.30 DST=224.0.0.251 LEN=32 TOS=0x00 PREC=0x00 TTL=1 ID=12327 PROTO=2 
Jul 22 08:29:03 rpiserver kernel: [203772.426861] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:01:f4:f5:e8:75:2c:91:08:00 SRC=192.168.11.1 DST=224.0.0.1 LEN=28 TOS=0x00 PREC=0xC0 TTL=1 ID=42894 PROTO=2 
Jul 22 08:29:03 rpiserver kernel: [203772.631665] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:fb:00:1b:b1:89:eb:df:08:00 SRC=192.168.11.36 DST=224.0.0.251 LEN=32 TOS=0x00 PREC=0x00 TTL=1 ID=30556 PROTO=2 
Jul 22 08:30:29 rpiserver kernel: [203859.057068] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:fb:cc:20:e8:21:ca:c8:08:00 SRC=192.168.11.175 DST=224.0.0.251 LEN=32 TOS=0x00 PREC=0x00 TTL=1 ID=26206 PROTO=2 
Jul 22 08:31:07 rpiserver kernel: [203896.839703] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:01:f4:f5:e8:75:2c:91:08:00 SRC=192.168.11.1 DST=224.0.0.1 LEN=28 TOS=0x00 PREC=0xC0 TTL=1 ID=42895 PROTO=2 
Jul 22 08:31:10 rpiserver kernel: [203899.706930] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:fb:30:52:cb:ae:19:48:08:00 SRC=192.168.11.30 DST=224.0.0.251 LEN=32 TOS=0x00 PREC=0x00 TTL=1 ID=12364 PROTO=2 
Jul 22 08:31:22 rpiserver kernel: [203911.794400] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:fb:fc:d8:48:46:ce:ec:08:00 SRC=192.168.11.8 DST=224.0.0.251 LEN=32 TOS=0x00 PREC=0x00 TTL=1 ID=62194 PROTO=2 
Jul 22 08:31:22 rpiserver kernel: [203911.794524] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:fb:f4:f5:e8:75:2c:91:08:00 SRC=192.168.11.1 DST=224.0.0.251 LEN=28 TOS=0x00 PREC=0xC0 TTL=1 ID=5863 PROTO=2 
Jul 22 08:31:23 rpiserver kernel: [203912.201449] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:fb:30:52:cb:ae:19:48:08:00 SRC=192.168.11.30 DST=224.0.0.251 LEN=32 TOS=0x00 PREC=0x00 TTL=1 ID=12368 PROTO=2 
Jul 22 08:31:23 rpiserver kernel: [203912.202271] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:fb:f4:f5:d8:b1:4e:26:08:00 SRC=192.168.11.104 DST=224.0.0.251 LEN=32 TOS=0x00 PREC=0xC0 TTL=1 ID=0 DF PROTO=2 
Jul 22 08:31:23 rpiserver kernel: [203912.814213] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:fb:fc:d8:48:46:ce:ec:08:00 SRC=192.168.11.8 DST=224.0.0.251 LEN=32 TOS=0x00 PREC=0x00 TTL=1 ID=47037 PROTO=2 
Jul 22 08:32:28 rpiserver kernel: [203978.150212] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:fb:90:8d:6c:17:13:32:08:00 SRC=192.168.11.5 DST=224.0.0.251 LEN=32 TOS=0x00 PREC=0x00 TTL=1 ID=62071 PROTO=2 
Jul 22 08:33:13 rpiserver kernel: [204022.587317] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:01:f4:f5:e8:75:2c:91:08:00 SRC=192.168.11.1 DST=224.0.0.1 LEN=28 TOS=0x00 PREC=0xC0 TTL=1 ID=42896 PROTO=2 
Jul 22 08:33:14 rpiserver kernel: [204023.611551] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:fb:b8:27:eb:cf:60:b6:08:00 SRC=192.168.11.140 DST=224.0.0.251 LEN=32 TOS=0x00 PREC=0xC0 TTL=1 ID=0 DF PROTO=2 
Jul 22 08:35:18 rpiserver kernel: [204147.521439] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:01:f4:f5:e8:75:2c:91:08:00 SRC=192.168.11.1 DST=224.0.0.1 LEN=28 TOS=0x00 PREC=0xC0 TTL=1 ID=42897 PROTO=2 
Jul 22 08:35:22 rpiserver kernel: [204151.615197] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:fb:90:8d:6c:17:13:32:08:00 SRC=192.168.11.5 DST=224.0.0.251 LEN=32 TOS=0x00 PREC=0x00 TTL=1 ID=35632 PROTO=2 
Jul 22 08:37:22 rpiserver kernel: [204271.935530] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:01:f4:f5:e8:75:2c:91:08:00 SRC=192.168.11.1 DST=224.0.0.1 LEN=28 TOS=0x00 PREC=0xC0 TTL=1 ID=42898 PROTO=2 
Jul 22 08:37:25 rpiserver kernel: [204274.799716] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:fb:b8:27:eb:cf:60:b6:08:00 SRC=192.168.11.140 DST=224.0.0.251 LEN=32 TOS=0x00 PREC=0xC0 TTL=1 ID=0 DF PROTO=2 
Jul 22 08:38:38 rpiserver kernel: [204347.713070] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:fb:f4:f5:e8:75:2c:91:08:00 SRC=192.168.11.1 DST=224.0.0.251 LEN=28 TOS=0x00 PREC=0xC0 TTL=1 ID=5864 PROTO=2 
Jul 22 08:38:40 rpiserver kernel: [204350.169613] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:fb:00:1b:b1:89:eb:df:08:00 SRC=192.168.11.36 DST=224.0.0.251 LEN=32 TOS=0x00 PREC=0x00 TTL=1 ID=30614 PROTO=2 
Jul 22 08:39:28 rpiserver kernel: [204397.683527] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:01:f4:f5:e8:75:2c:91:08:00 SRC=192.168.11.1 DST=224.0.0.1 LEN=28 TOS=0x00 PREC=0xC0 TTL=1 ID=42899 PROTO=2 
Jul 22 08:39:30 rpiserver kernel: [204400.140961] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:fb:00:1b:b1:89:eb:df:08:00 SRC=192.168.11.36 DST=224.0.0.251 LEN=32 TOS=0x00 PREC=0x00 TTL=1 ID=30617 PROTO=2 
Jul 22 08:39:30 rpiserver kernel: [204400.141099] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:fb:30:52:cb:ae:19:48:08:00 SRC=192.168.11.30 DST=224.0.0.251 LEN=32 TOS=0x00 PREC=0x00 TTL=1 ID=12402 PROTO=2 
Jul 22 08:39:42 rpiserver kernel: [204411.205118] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:fb:90:8d:6c:17:13:32:08:00 SRC=192.168.11.5 DST=224.0.0.251 LEN=32 TOS=0x00 PREC=0x00 TTL=1 ID=49274 PROTO=2 
Jul 22 08:41:32 rpiserver kernel: [204521.997460] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:01:f4:f5:e8:75:2c:91:08:00 SRC=192.168.11.1 DST=224.0.0.1 LEN=28 TOS=0x00 PREC=0xC0 TTL=1 ID=42900 PROTO=2 
Jul 22 08:41:35 rpiserver kernel: [204524.661126] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:fb:fc:d8:48:3c:d0:fb:08:00 SRC=192.168.11.60 DST=224.0.0.251 LEN=32 TOS=0x00 PREC=0x00 TTL=1 ID=12847 PROTO=2 
Jul 22 08:41:35 rpiserver kernel: [204524.661248] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:fb:f4:f5:e8:75:2c:91:08:00 SRC=192.168.11.1 DST=224.0.0.251 LEN=28 TOS=0x00 PREC=0xC0 TTL=1 ID=5865 PROTO=2 
Jul 22 08:41:36 rpiserver kernel: [204525.684204] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:fb:30:52:cb:ae:19:48:08:00 SRC=192.168.11.30 DST=224.0.0.251 LEN=32 TOS=0x00 PREC=0x00 TTL=1 ID=12421 PROTO=2 
Jul 22 08:41:38 rpiserver kernel: [204527.732057] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:fb:fc:d8:48:3c:d0:fb:08:00 SRC=192.168.11.60 DST=224.0.0.251 LEN=32 TOS=0x00 PREC=0x00 TTL=1 ID=38502 PROTO=2 
Jul 22 08:41:39 rpiserver kernel: [204529.063259] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:fb:90:8d:6c:17:13:32:08:00 SRC=192.168.11.5 DST=224.0.0.251 LEN=32 TOS=0x00 PREC=0x00 TTL=1 ID=27427 PROTO=2 
Jul 22 08:43:37 rpiserver kernel: [204647.028671] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:01:f4:f5:e8:75:2c:91:08:00 SRC=192.168.11.1 DST=224.0.0.1 LEN=28 TOS=0x00 PREC=0xC0 TTL=1 ID=42901 PROTO=2 
Jul 22 08:43:40 rpiserver kernel: [204649.281249] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:fb:30:52:cb:ae:19:48:08:00 SRC=192.168.11.30 DST=224.0.0.251 LEN=32 TOS=0x00 PREC=0x00 TTL=1 ID=12430 PROTO=2 
Jul 22 08:43:51 rpiserver kernel: [204660.239290] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:fb:f4:f5:e8:75:2c:91:08:00 SRC=192.168.11.1 DST=224.0.0.251 LEN=28 TOS=0x00 PREC=0xC0 TTL=1 ID=5866 PROTO=2 
Jul 22 08:43:52 rpiserver kernel: [204661.876659] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:fb:f4:f5:d8:b1:4e:26:08:00 SRC=192.168.11.104 DST=224.0.0.251 LEN=32 TOS=0x00 PREC=0xC0 TTL=1 ID=0 DF PROTO=2 
Jul 22 08:45:43 rpiserver kernel: [204772.571567] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:01:f4:f5:e8:75:2c:91:08:00 SRC=192.168.11.1 DST=224.0.0.1 LEN=28 TOS=0x00 PREC=0xC0 TTL=1 ID=42902 PROTO=2 
Jul 22 08:45:43 rpiserver kernel: [204773.185995] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:fb:00:1b:b1:89:eb:df:08:00 SRC=192.168.11.36 DST=224.0.0.251 LEN=32 TOS=0x00 PREC=0x00 TTL=1 ID=30650 PROTO=2 
Jul 22 08:47:19 rpiserver kernel: [204868.317446] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:fb:90:8d:6c:17:13:32:08:00 SRC=192.168.11.5 DST=224.0.0.251 LEN=32 TOS=0x00 PREC=0x00 TTL=1 ID=17769 PROTO=2 
Jul 22 08:47:48 rpiserver kernel: [204897.704972] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:01:f4:f5:e8:75:2c:91:08:00 SRC=192.168.11.1 DST=224.0.0.1 LEN=28 TOS=0x00 PREC=0xC0 TTL=1 ID=42903 PROTO=2 
Jul 22 08:47:52 rpiserver kernel: [204901.592912] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:fb:f4:f5:d8:b1:4e:26:08:00 SRC=192.168.11.104 DST=224.0.0.251 LEN=32 TOS=0x00 PREC=0xC0 TTL=1 ID=0 DF PROTO=2 
Jul 22 08:47:57 rpiserver kernel: [204906.920830] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:fb:90:8d:6c:17:13:32:08:00 SRC=192.168.11.5 DST=224.0.0.251 LEN=32 TOS=0x00 PREC=0x00 TTL=1 ID=35773 PROTO=2 
Jul 22 08:48:00 rpiserver kernel: [204909.584370] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:fb:fc:d8:48:46:ce:ec:08:00 SRC=192.168.11.8 DST=224.0.0.251 LEN=32 TOS=0x00 PREC=0x00 TTL=1 ID=8008 PROTO=2 
Jul 22 08:48:00 rpiserver kernel: [204909.584608] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:fb:f4:f5:e8:75:2c:91:08:00 SRC=192.168.11.1 DST=224.0.0.251 LEN=28 TOS=0x00 PREC=0xC0 TTL=1 ID=5867 PROTO=2 
Jul 22 08:48:00 rpiserver kernel: [204909.788286] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:fb:30:52:cb:ae:19:48:08:00 SRC=192.168.11.30 DST=224.0.0.251 LEN=32 TOS=0x00 PREC=0x00 TTL=1 ID=12454 PROTO=2 
Jul 22 08:48:07 rpiserver kernel: [204916.239411] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:fb:00:1b:b1:89:eb:df:08:00 SRC=192.168.11.36 DST=224.0.0.251 LEN=32 TOS=0x00 PREC=0x00 TTL=1 ID=30670 PROTO=2 
Jul 22 08:48:56 rpiserver kernel: [204966.007138] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:fb:f4:f5:e8:75:2c:91:08:00 SRC=192.168.11.1 DST=224.0.0.251 LEN=28 TOS=0x00 PREC=0xC0 TTL=1 ID=5868 PROTO=2 
Jul 22 08:48:56 rpiserver kernel: [204966.007266] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:fb:fc:d8:48:46:ce:ec:08:00 SRC=192.168.11.8 DST=224.0.0.251 LEN=32 TOS=0x00 PREC=0x00 TTL=1 ID=50127 PROTO=2 
Jul 22 08:49:00 rpiserver kernel: [204970.102163] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:fb:fc:d8:48:46:ce:ec:08:00 SRC=192.168.11.8 DST=224.0.0.251 LEN=32 TOS=0x00 PREC=0x00 TTL=1 ID=47133 PROTO=2 
Jul 22 08:49:52 rpiserver kernel: [205021.917343] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:01:f4:f5:e8:75:2c:91:08:00 SRC=192.168.11.1 DST=224.0.0.1 LEN=28 TOS=0x00 PREC=0xC0 TTL=1 ID=42904 PROTO=2 
Jul 22 08:49:56 rpiserver kernel: [205025.398474] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:fb:f4:f5:d8:b1:4e:26:08:00 SRC=192.168.11.104 DST=224.0.0.251 LEN=32 TOS=0x00 PREC=0xC0 TTL=1 ID=0 DF PROTO=2 
Jul 22 08:51:57 rpiserver kernel: [205146.845289] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:01:f4:f5:e8:75:2c:91:08:00 SRC=192.168.11.1 DST=224.0.0.1 LEN=28 TOS=0x00 PREC=0xC0 TTL=1 ID=42905 PROTO=2 
Jul 22 08:52:00 rpiserver kernel: [205149.302966] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:fb:b8:27:eb:cf:60:b6:08:00 SRC=192.168.11.140 DST=224.0.0.251 LEN=32 TOS=0x00 PREC=0xC0 TTL=1 ID=0 DF PROTO=2 
Jul 22 08:54:02 rpiserver kernel: [205271.773877] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:01:f4:f5:e8:75:2c:91:08:00 SRC=192.168.11.1 DST=224.0.0.1 LEN=28 TOS=0x00 PREC=0xC0 TTL=1 ID=42906 PROTO=2 
Jul 22 08:54:02 rpiserver kernel: [205272.183436] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:fb:30:52:cb:ae:19:48:08:00 SRC=192.168.11.30 DST=224.0.0.251 LEN=32 TOS=0x00 PREC=0x00 TTL=1 ID=12497 PROTO=2 
Jul 22 08:56:08 rpiserver kernel: [205397.316719] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:01:f4:f5:e8:75:2c:91:08:00 SRC=192.168.11.1 DST=224.0.0.1 LEN=28 TOS=0x00 PREC=0xC0 TTL=1 ID=42907 PROTO=2 
Jul 22 08:56:08 rpiserver kernel: [205397.726255] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:fb:00:1b:b1:89:eb:df:08:00 SRC=192.168.11.36 DST=224.0.0.251 LEN=32 TOS=0x00 PREC=0x00 TTL=1 ID=30705 PROTO=2 
Jul 22 08:58:12 rpiserver kernel: [205521.938216] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:01:f4:f5:e8:75:2c:91:08:00 SRC=192.168.11.1 DST=224.0.0.1 LEN=28 TOS=0x00 PREC=0xC0 TTL=1 ID=42908 PROTO=2 
Jul 22 08:58:15 rpiserver kernel: [205524.600664] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:fb:b8:27:eb:cf:60:b6:08:00 SRC=192.168.11.140 DST=224.0.0.251 LEN=32 TOS=0x00 PREC=0xC0 TTL=1 ID=0 DF PROTO=2 
Jul 22 09:00:01 rpiserver kernel: [205630.281934] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:fb:fc:d8:48:46:ce:ec:08:00 SRC=192.168.11.8 DST=224.0.0.251 LEN=32 TOS=0x00 PREC=0x00 TTL=1 ID=29596 PROTO=2 
Jul 22 09:00:01 rpiserver kernel: [205630.282828] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:fb:f4:f5:e8:75:2c:91:08:00 SRC=192.168.11.1 DST=224.0.0.251 LEN=28 TOS=0x00 PREC=0xC0 TTL=1 ID=5869 PROTO=2 
Jul 22 09:00:01 rpiserver kernel: [205630.685115] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:fb:fc:d8:48:3c:d0:fb:08:00 SRC=192.168.11.60 DST=224.0.0.251 LEN=32 TOS=0x00 PREC=0x00 TTL=1 ID=6762 PROTO=2 
Jul 22 09:00:01 rpiserver kernel: [205630.686010] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:fb:f4:f5:e8:75:2c:91:08:00 SRC=192.168.11.1 DST=224.0.0.251 LEN=28 TOS=0x00 PREC=0xC0 TTL=1 ID=5870 PROTO=2 
Jul 22 09:00:01 rpiserver kernel: [205630.686921] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:fb:b8:27:eb:cf:60:b6:08:00 SRC=192.168.11.140 DST=224.0.0.251 LEN=32 TOS=0x00 PREC=0xC0 TTL=1 ID=0 DF PROTO=2 
Jul 22 09:00:03 rpiserver kernel: [205632.322631] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:fb:fc:d8:48:46:ce:ec:08:00 SRC=192.168.11.8 DST=224.0.0.251 LEN=32 TOS=0x00 PREC=0x00 TTL=1 ID=21906 PROTO=2 
Jul 22 09:00:10 rpiserver kernel: [205639.491887] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:fb:fc:d8:48:3c:d0:fb:08:00 SRC=192.168.11.60 DST=224.0.0.251 LEN=32 TOS=0x00 PREC=0x00 TTL=1 ID=57480 PROTO=2 
Jul 22 09:00:18 rpiserver kernel: [205647.482639] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:01:f4:f5:e8:75:2c:91:08:00 SRC=192.168.11.1 DST=224.0.0.1 LEN=28 TOS=0x00 PREC=0xC0 TTL=1 ID=42909 PROTO=2 
Jul 22 09:00:19 rpiserver kernel: [205649.119332] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:fb:b8:27:eb:cf:60:b6:08:00 SRC=192.168.11.140 DST=224.0.0.251 LEN=32 TOS=0x00 PREC=0xC0 TTL=1 ID=0 DF PROTO=2 
Jul 22 09:02:23 rpiserver kernel: [205772.512107] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:01:f4:f5:e8:75:2c:91:08:00 SRC=192.168.11.1 DST=224.0.0.1 LEN=28 TOS=0x00 PREC=0xC0 TTL=1 ID=42910 PROTO=2 
Jul 22 09:02:25 rpiserver kernel: [205774.764880] [UFW BLOCK] IN=wlan0 OUT= MAC=01:00:5e:00:00:fb:f4:f5:d8:b1:4e:26:08:00 SRC=192.168.11.104 DST=224.0.0.251 LEN=32 TOS=0x00 PREC=0xC0 TTL=1 ID=0 DF PROTO=2 
0

These are the Kernel generated UFW log messages.

In your system a different config file is made for managing these logs,

 luvpreet@DHARI-Inspiron-3542:~$ cd /etc/rsyslog.d/
 luvpreet@DHARI-Inspiron-3542:/etc/rsyslog.d$ ls | grep ufw
 20-ufw.conf

See the contents of this file,

luvpreet@DHARI-Inspiron-3542:/etc/rsyslog.d$ cat 20-ufw.conf 

# Log kernel generated UFW log messages to file
:msg,contains,"[UFW " /var/log/ufw.log

# Uncomment the following to stop logging anything that matches the last rule.
# Doing this will stop logging kernel generated UFW log messages to the file
# normally containing kern.* messages (eg, /var/log/kern.log)
#& stop

Rename this file, and remove the .conf at the end,

luvpreet@DHARI-Inspiron-3542:/etc/rsyslog.d$ sudo mv 20-ufw.conf 20-ufw

Now, restart rsyslog,

luvpreet@DHARI-Inspiron-3542:/etc/rsyslog.d$ sudo service rsyslog restart

This will stop logging these messages.

NOTE - If you don't see this file, search for this line :msg,contains,"[UFW " /var/log/ufw.log in all the files in the folder /etc/rsyslog.d. Wherevere you see it, comment this line and restart rsyslog.

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