I've got the following network card:

Bus 001 Device 002: ID 12d1:1506 Huawei Technologies Co., Ltd. Modem/Networkcard

It's accessable through ip tool and properly works with dhcpcd (3rd entry in the output below):

$ ip addr
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
    inet scope host lo
       valid_lft forever preferred_lft forever
    inet6 ::1/128 scope host
       valid_lft forever preferred_lft forever
2: enp5s0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc fq_codel state DOWN group default qlen 1000
    link/ether bc:5f:f4:3a:84:84 brd ff:ff:ff:ff:ff:ff
3: wwp0s18f2u1i1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc fq_codel state UNKNOWN group default qlen 1000
    link/ether 0c:5b:8f:27:9a:64 brd ff:ff:ff:ff:ff:ff
    inet brd scope global wwp0s18f2u1i1
       valid_lft forever preferred_lft forever
    inet6 fe80::48d6:a9ee:6db4:1236/64 scope link
       valid_lft forever preferred_lft forever

But NetworkManager seems to ignore it:

$ nmcli device show
GENERAL.DEVICE:                         enp5s0
GENERAL.TYPE:                           ethernet
GENERAL.HWADDR:                         BC:5F:F4:3A:84:84
GENERAL.MTU:                            1500
GENERAL.STATE:                          20 (unavailable)
GENERAL.CONNECTION:                     --
GENERAL.CON-PATH:                       --

GENERAL.DEVICE:                         lo
GENERAL.TYPE:                           loopback
GENERAL.HWADDR:                         00:00:00:00:00:00
GENERAL.MTU:                            65536
GENERAL.STATE:                          10 (unmanaged)
GENERAL.CONNECTION:                     --
GENERAL.CON-PATH:                       --
IP4.GATEWAY:                            --
IP6.ADDRESS[1]:                         ::1/128
IP6.GATEWAY:                            --

I can continue using dhcpcd for this connection, but I need to connect to VPN sometimes, and NetworkManager is not allowing me to establish VPN connection unless it's ensured I have LAN connection.


Change in /etc/NetworkManager/NetworkManager.conf [ifupdown] managed=false to [ifupdown] managed=true

  • There was an empty config, I've tried to add [ifupdown] managed=true and it has no effect. I've also tried to add only managed=true, and this leads to not starting NM service. – Denis Sheremet Mar 26 '17 at 18:12
  • t was emty? The whole file looks like this. [main] plugins=ifupdown,keyfile [ifupdown] managed=false in original. – user192526 Mar 26 '17 at 18:18
  • I've got this: # Configuration file for NetworkManager. # See "man 5 NetworkManager.conf" for details. – Denis Sheremet Mar 27 '17 at 6:08

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