HI Pim,

Yes ( https://gerrit.fd.io/r/c/vpp/+/45103 ) seems to have resolved the
issues, latest build from master is working


Best regards

Pieter Meyer
Email                : [email protected]
Cell number       : +2783 233 6614


On Mon, Mar 9, 2026 at 4:19 PM Pim van Pelt via lists.fd.io <pim=
[email protected]> wrote:

> Hoi,
>
> Does https://gerrit.fd.io/r/c/vpp/+/45103 address the issue?
>
> groet,
> Pim
>
> On 09.03.2026 06:45, Pieter Meyer via lists.fd.io wrote:
>
> I see the same issue,
> after adding the tap_plugin.so { enable } to startup,
> VPP starts but I also cannot ping from the Linux name space, but but in
> VPP the ping is working,
> this causes BGP sessions to fail
>
> everything works as expected in 25.10
>
> Best regards
>
> Pieter Meyer
> Email                : [email protected]
> Cell number       : +2783 233 6614
>
>
> On Thu, Mar 5, 2026 at 7:42 PM Emiliano González via lists.fd.io
> <[email protected]> wrote:
>
>> 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
>>
>>
>>
>>
>>
>
> --
> Pim van Pelt <[email protected]> <[email protected]>
> PBVP1-RIPE https://ipng.ch/
>
>
>
> 
>
>
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