The update to *26.02* brought along many changes that I can’t find documented 
anywhere; unfortunately, it’s not a usable version for me. Upgrading from 
*25.10* to *26.02* causes several things to stop working.

In addition to what has already been reported, the current issue is that 
traffic between two instances (VM = Debian + VPP + FRR) cannot be established 
from the Linux side, though it works from VPP. For example, if I ping from 
Linux to the other instance, it fails; if I ping from VPP, it works. 
Consequently, services (such as BGP) are not functioning.

> 
> core-vpp:~# ip vrf exec interno ping 10.10.10.5 -c 1
> PING 10.10.10.5 (10.10.10.5) 56(84) bytes of data.
> --- 10.10.10.5 ping statistics ---
> 1 packets transmitted, 0 received, 100% packet loss, time 0ms
> core-vpp:~# vppctl
> _______    _        _   _____  ___
> __/ __/ _ \  (_)__    | | / / _ \/ _ \
> _/ _// // / / / _ \   | |/ / ___/ ___/
> /_/ /____(_)_/\___/   |___/_/  /_/
> vpp# ping 10.10.10.5 source ens16.3001 repeat 1
> 116 bytes from 10.10.10.5: icmp_seq=1 ttl=64 time=7.2317 ms
> Statistics: 1 sent, 1 received, 0% packet loss
> vpp# quit
> core-vpp:~# ip add show dev ens16.3001
> 5: ens16.3001@ens16: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc
> noqueue master interno state UP group default qlen 1000
> link/ether 44:4c:a8:20:99:aa brd ff:ff:ff:ff:ff:ff
> inet 10.10.10.6/30 scope global ens16.3001
> valid_lft forever preferred_lft forever
> inet6 fc00::10:10:10:6/126 scope global
> valid_lft forever preferred_lft forever
> inet6 fe80::464c:a8ff:fe20:99aa/64 scope link
> valid_lft forever preferred_lft forever
> core-vpp:~# ip neighbo show dev ens16.3001
> 10.10.10.5 lladdr 44:4c:a8:20:88:9e STALE
> fc00::10:10:10:5 lladdr 44:4c:a8:20:88:9e REACHABLE
> 

If I perform a downgrade, everything goes back to working normally.

> 
> apt install vpp=25.10-release libvppinfra=25.10-release
> vpp-plugin-core=25.10-release vpp-plugin-dpdk=25.10-release
> python3-vpp-api=25.10-release
>
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