Controlling NetworkManager - nmcli

|
Operating system/ Linux
| Linux

Controlling NetworkManager

nmcli connection show

1
2
3
$ nmcli connection show
NAME                UUID                                  TYPE      DEVICE
DONGSHENG-CMMC      58dba110-b6e9-4793-98cf-6f893f22de28  wifi      wlx6c5ab5a4f8a7

nmcli device show

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
$ nmcli device show wlx6c5ab5a4f8a7
GENERAL.DEVICE:                         wlx6c5ab5a4f8a7
GENERAL.TYPE:                           wifi
GENERAL.HWADDR:                         6C:5A:B5:A4:F8:A7
GENERAL.MTU:                            1500
GENERAL.STATE:                          100 (connected)
GENERAL.CONNECTION:                     DONGSHENG-CMMC
GENERAL.CON-PATH:                       /org/freedesktop/NetworkManager/ActiveConnection/1
IP4.ADDRESS[1]:                         192.168.1.11/24
IP4.GATEWAY:                            192.168.1.1
IP4.ROUTE[1]:                           dst = 192.168.1.0/24, nh = 0.0.0.0, mt = 600
IP4.ROUTE[2]:                           dst = 0.0.0.0/0, nh = 192.168.1.1, mt = 600
IP4.DNS[1]:                             192.168.1.1
IP4.DNS[2]:                             114.114.114.114
IP4.DNS[3]:                             8.8.8.8
IP4.DNS[4]:                             8.8.4.4
IP6.ADDRESS[1]:                         2409:8a55:8b8:4560:1755:efdd:ae0e:b950/64
IP6.ADDRESS[2]:                         fe80::223f:a26d:9121:859d/64
IP6.GATEWAY:                            fe80::1
IP6.ROUTE[1]:                           dst = fe80::/64, nh = ::, mt = 600
IP6.ROUTE[2]:                           dst = 2409:8a55:8b8:4560::/64, nh = ::, mt = 600
IP6.ROUTE[3]:                           dst = ::/0, nh = fe80::1, mt = 600
IP6.ROUTE[4]:                           dst = ff00::/8, nh = ::, mt = 256, table=255
IP6.DNS[1]:                             fe80::1

nmcli connection modify

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
nmcli connection | tail -n+2 | grep --color '[0-9a-z]\{8\}-.\{28\}' -o | \
while read UUID; do
    echo $UUID;
    nmcli connection show $UUID | grep -i dns;
    nmcli connection modify $UUID ipv4.ignore-auto-dns yes
    nmcli connection modify $UUID ipv6.ignore-auto-dns yes
    echo -e '\n\n';
done

# nmcli connection modify 58dba110-b6e9-4793-98cf-6f893f22de28 ipv4.dns "192.168.1.1,114.114.114.114,8.8.8.8,8.8.4.4"

$ nmcli connection show 58dba110-b6e9-4793-98cf-6f893f22de28 | grep "dns"
connection.mdns:                        -1 (default)
ipv4.dns:                               192.168.1.1,114.114.114.114,8.8.8.8,8.8.4.4
ipv4.dns-search:                        --
ipv4.dns-options:                       ""
ipv4.dns-priority:                      0
ipv4.ignore-auto-dns:                   yes
ipv6.dns:                               --
ipv6.dns-search:                        --
ipv6.dns-options:                       ""
ipv6.dns-priority:                      0
ipv6.ignore-auto-dns:                   no