Display BGP gateway mode in show protocol output

[Ondrej Zajicek]

On Mon, Sep 08, 2025 at 09:30:28AM +0000, Sébastien PARISOT wrote:
> > Note: We have to refactor the nexthop implementation quite heavily soon
> 
> This is interesting. I understand the refactor work will happen after EVPN is released? Do you have some idea of what you would like to do already?

We would like to have 'nexthop' as an attribute, with some way of having
multiple instances of the attribute (for ECMP), while the body of the
attribute will be a list of sub-attributes (for iface, gw, encapsulation,
MPLS stack ...), similarly how Linux Netlink is doing that.

In the current situation, we store EVPN forwarding entry VXLAN remote
address in a gateway field, which is a semantic abuse. Also, it prevent
us to implement different encapsulations to L3VPN as we have no place
to store encapsulation data for each nexthop.

-- 
Elen sila lumenn' omentielvo

Ondrej 'Santiago' Zajicek (email: santiago at crfreenet.org)
"To err is human -- to blame it on a computer is even more so."