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Maniphest T7721

l2tpv3 does not show any interface information
Closed, ResolvedPublicBUG
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Description

The output command to show interface information specific to l2tpv3 does not show any results whereas the ifconfig shows the details.

vyos@vyos:~$ show interfaces l2tpv3 l2tpeth308
vyos@vyos:~$ show interfaces l2tpv3 l2tpeth308 brief
Codes: S - State, L - Link, u - Up, D - Down, A - Admin Down
Interface        IP Address                        S/L  Description
---------        ----------                        ---  -----------

Validation from alternate commands

vyos@vyos# sudo ip address show dev l2tpeth308
8: l2tpeth308: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1488 qdisc fq_codel state UNKNOWN group default qlen 1000
    link/ether 16:b5:35:0a:e4:cb brd ff:ff:ff:ff:ff:ff
    inet 192.168.37.1/27 brd 192.168.37.31 scope global l2tpeth308
       valid_lft forever preferred_lft forever
    inet6 fe80::14b5:35ff:fe0a:e4cb/64 scope link
       valid_lft forever preferred_lft forever

vyos@vyos# run sh int
Codes: S - State, L - Link, u - Up, D - Down, A - Admin Down
Interface    IP Address       MAC                VRF        MTU  S/L    Description
-----------  ---------------  -----------------  -------  -----  -----  -------------
eth0         -                50:0b:00:12:00:00  default   1500  u/u
eth1         -                50:0b:00:12:00:01  default   1500  u/u
eth2         -                50:0b:00:12:00:02  default   1500  u/u
eth3         -                50:0b:00:12:00:03  default   1500  u/u
l2tpeth308   192.168.37.1/27  16:b5:35:0a:e4:cb  default   1488  u/u

vyos@vyos# ifconfig l2tpeth308
l2tpeth308: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1488
        inet 192.168.37.1  netmask 255.255.255.224  broadcast 192.168.37.31
        inet6 fe80::14b5:35ff:fe0a:e4cb  prefixlen 64  scopeid 0x20<link>
        ether 16:b5:35:0a:e4:cb  txqueuelen 1000  (Ethernet)
        RX packets 8  bytes 900 (900.0 B)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 8  bytes 836 (836.0 B)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

Configuration:

set interfaces l2tpv3 l2tpeth308 address '192.168.37.1/27'
set interfaces l2tpv3 l2tpeth308 destination-port '5308'
set interfaces l2tpv3 l2tpeth308 encapsulation 'ip'
set interfaces l2tpv3 l2tpeth308 peer-session-id '308'
set interfaces l2tpv3 l2tpeth308 peer-tunnel-id '308'
set interfaces l2tpv3 l2tpeth308 remote '192.168.0.2'
set interfaces l2tpv3 l2tpeth308 session-id '308'
set interfaces l2tpv3 l2tpeth308 source-address '192.168.0.1'
set interfaces l2tpv3 l2tpeth308 source-port '5308'
set interfaces l2tpv3 l2tpeth308 tunnel-id '308'

Details

Version
2025.08.13-0020-rolling , 1.4.3
Is it a breaking change?
Perfectly compatible
Issue type
Bug (incorrect behavior)

Related Objects

Event Timeline

SrividyaA created this task.Aug 14 2025, 4:10 PM
pasik subscribed.Aug 14 2025, 4:18 PM
Viacheslav triaged this task as Normal priority.Aug 15 2025, 8:36 AM
Viacheslav added projects: VyOS Rolling, VyOS 1.5 Circinus (1.5-stream-2025-Q3), VyOS 1.4 Sagitta (1.4.4).
haiyang subscribed.Sep 24 2025, 3:10 AM

created a Pull Request to fix this issue -> https://github.com/vyos/vyos-1x/pull/4746

Viacheslav changed the task status from Open to In progress.Sep 24 2025, 10:02 AM
Viacheslav assigned this task to haiyang.
haiyang mentioned this in rVYOSONEXfa47905c62b3: l2tpv3: T7721: fix show l2tpv3 interface information.Sep 25 2025, 11:32 AM
Restricted Repository Identity mentioned this in rVYOSONEX8ddb1f0e0302: Merge pull request #4746 from awolfnet/current.Sep 25 2025, 11:32 AM
dmbaturin moved this task from Backlog to Finished on the VyOS 1.4 Sagitta (1.4.4) board.Oct 6 2025, 10:28 AM
dmbaturin moved this task from Open to Finished on the VyOS 1.5 Circinus (1.5-stream-2025-Q3) board.
dmbaturin moved this task from Need Triage to Completed on the VyOS Rolling board.
Unknown Object (User) closed this task as Resolved.Oct 8 2025, 5:13 PM
dmbaturin edited projects, added VyOS 1.5 Circinus (2025.11); removed VyOS 1.4 Sagitta (1.4.4), VyOS 1.5 Circinus (1.5-stream-2025-Q3), VyOS Rolling.Wed, Nov 12, 6:21 PM
dmbaturin changed Is it a breaking change? from Unspecified (possibly destroys the router) to Perfectly compatible.