BGP configuration in VRF topologies without bgp module

[jbemmel]

This Sunday, I was testing out topology integration/vrf/33-vrf-common-ospf while implementing Cumulus NVUE OSPFv2 support in VRFs

On Cumulus (and FRR in general, similar on EOS), this yields the following:

The validation passes, but I'm seeing all sorts of BGP and IP-VPN related configs that would seem to require the bgp module - which isn't used in this topology. If not, it requires the vrf.bgp feature which isn't implemented for Cumulus NVUE - but there is no check/warning

Perhaps

netlab/netsim/modules/vrf.py

Line 280 in a1e1076

def validate_vrf_route_leaking(node : Box) -> None:

should check for vpn.bgp support?

Thoughts?

[jbemmel]

See #1560

[ipspace]

When you figure out how to do inter-VRF route leaking in FRR (and a bunch of other platforms) without going through BGP, please submit a PR (not promising I will merge it though, the current stuff works ;)

As for checking for yet another feature flag, there aren't that many platforms that cannot do inter-VRF route leaking, so that belongs into quirks.