[FROG] /31s, scope link and FRR BGP
Chris Malton (Delta V)
chris at deltav-tech.co.uk
Sat Oct 13 04:19:48 EDT 2018
I have /31s from an upstream provider on v4. If I specify "scope link"
in /etc/network/interfaces for these, FRR seemingly doesn't allow the
address to be used for update-source.
Minimal reproduction example (taken from one of my core routers):
iface lo inet loopback
up ip addr add 184.108.40.206/32 scope global dev lo
iface ens4 inet static
router bgp 65000
neighbor 192.168.1.2 remote-as 65001
neighbor 192.168.1.2 interface ens4
neighbor 192.168.1.2 update-source 192.168.1.3
What happens in this case, is that FRR sends updates from 172.16.0.2
instead of 192.168.1.3 (despite being explicitly told otherwise!).
Have I found a bug, or have I done something stupid?
Thanks in advance.
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