ipv6 nd suppress-ra does not take for OS-configured interface #7738
Description
Describe the bug
Hoster reported my router VM to be sending IPv6 RAs, disabling them via
otemachi(config-if)# interface eth0
otemachi(config-if)# ipv6 nd suppress-ra
otemachi(config-if)# end
on the OS-configured interface did not take meaning the configuration did not disable the RAs from being sent and did not show up in show running-config.
[x] Did you check if this is a duplicate issue?
[-] Did you test it on the latest FRRouting/frr master branch?
To Reproduce
Debian /etc/network/interfaces configuration for eth0:
# The primary network interface
allow-hotplug eth0
iface eth0 inet static
address 217.197.86.170
netmask 255.255.255.240
broadcast 217.197.86.171
#gateway 217.197.83.129
# dns-* options are implemented by the resolvconf package, if installed
dns-nameservers 8.8.8.8
dns-search zaphods.net
post-up /sbin/ip ro add 217.197.83.128/25 dev eth0
post-up /sbin/ip ro add default via 217.197.83.129 dev eth0
Interface eth0 not configured in frr.
otemachi(config-if)# interface eth0
otemachi(config-if)# ipv6 nd suppress-ra
otemachi(config-if)# end
Expected behavior
!
interface eth0
ipv6 nd suppress-ra
!
in show running-config.
Not sending router advertisement messages on interface eth0.
Versions
- OS Version: Debian 10.7 current
- Kernel: 4.19.0-9-amd64
- FRR Version: 7.5-0~deb10
ii frr 7.5-0~deb10 amd64 FRRouting suite of internet protocols (BGP, OSPF, IS-IS, ...)
ii frr-doc 7.5-0~deb10 all FRRouting suite - user manual
ii frr-pythontools 7.5-0~deb10 all FRRouting suite - Python tools
Additional context
otemachi# show interface eth0
Interface eth0 is up, line protocol is up
Link ups: 0 last: (never)
Link downs: 0 last: (never)
vrf: default
Description: Description
index 2 metric 0 mtu 1500 speed 4294967295
flags: <UP,BROADCAST,RUNNING,MULTICAST>
Type: Ethernet
HWaddr: 52:54:00:d9:18:69
inet 217.197.86.170/28
inet6 2001:67c:1400:1220::179/64
inet6 fe80::5054:ff:fed9:1869/64
Interface Type Other
Interface Slave Type None
ND advertised reachable time is 0 milliseconds
ND advertised retransmit interval is 0 milliseconds
ND advertised hop-count limit is 64 hops
ND router advertisements sent: 270573 rcvd: 1055
ND router advertisements are sent every 10 seconds
ND router advertisements lifetime tracks ra-interval
ND router advertisement default router preference is medium
Hosts use stateless autoconfig for addresses.