kernel: interfaces altname support #6786
Description
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=7a56493f0620
https://git.kernel.org/pub/scm/network/iproute2/iproute2.git/commit/?id=3aa0e51be
Support is added recently in systemd/systemd#14350
Tested with frr 7.4
Set alternative name to the interface:
ip link property add gig0 altname vrrp0
See interface altnames:
[root@linux01 ~]# ip link show gig0
2: gig0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc fq_codel state UP mode DEFAULT group default qlen 1000
link/ether 08:00:27:d3:fb:ea brd ff:ff:ff:ff:ff:ff
altname vrrp0
Work with altnames of interface:
[root@linux01 ~]# ip link show vrrp0
2: gig0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc fq_codel state UP mode DEFAULT group default qlen 1000
link/ether 08:00:27:d3:fb:ea brd ff:ff:ff:ff:ff:ff
altname vrrp0
Frr currently can't work with altnames of interface:
Hello, this is FRRouting (version 7.4).
Copyright 1996-2005 Kunihiro Ishiguro, et al.
linux01# sh interface
Interface gig0 is up, line protocol is up
Link ups: 0 last: (never)
Link downs: 0 last: (never)
vrf: default
index 2 metric 0 mtu 1500 speed 1000
flags: <UP,BROADCAST,RUNNING,MULTICAST>
Type: Ethernet
HWaddr: 08:00:27:d3:fb:ea
inet 192.168.4.86/26
Interface Type Other
Interface lo is up, line protocol is up
Link ups: 0 last: (never)
Link downs: 0 last: (never)
vrf: default
index 1 metric 0 mtu 65536 speed 0
flags: <UP,LOOPBACK,RUNNING>
Type: Loopback
Interface Type Other
linux01# sh interface vrrp0
% Can't find interface vrrp0
linux01#