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IP system is 192.168.1.100 static i boot up server i can ping it from the lan (with reply) but can not access services if i do

ifconfig eth0 192.168.1.101 netmask 255.255.255.0

then back to

ifconfig eth0 192.168.1.100 netmask 255.255.255.0

if fixes the problem i can access all ports again. What is the cause /solution (i can also access 192.168.1.101 when its set)

iptables is disabled

my ifcfg-eth0:

DEVICE=eth0
BOOTPROTO=none
ONBOOT=yes
IPADDR=192.168.1.100
NETMASK=255.255.255.0
TYPE=Ethernet
NM_CONTROLLED=no
USERCTL=no
PEERDNS=yes
IPV6INIT=no

arping -I eth0 -c5 -D 192.168.1.100 && echo OK || echo KO:duplicate
ARPING 192.168.1.100 from 0.0.0.0 eth0
Sent 5 probes (5 broadcast(s))
Received 0 response(s)
OK

thank you

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  • 1
    Is something else on the network using 192.168.1.100? Check your ARP tables. – jsbillings Feb 20 at 12:33
  • running from this system (the command from the iputils package, not from some arping package) arping -I eth0 -c5 -D 192.168.1.100 && echo OK || echo KO:duplicate would help figuring out such problem. (-D stands for "duplicate address detection" so there must be no reply and this will take 5s) – A.B Feb 20 at 13:26
  • Hi thank you, the reply was Received 0 response(s) – user3265051 Feb 20 at 19:03
  • i put the output to that command in the question formatted as well – user3265051 Feb 20 at 20:09
  • could it be an ip policy issue? – user3265051 Feb 20 at 20:30

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