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 faileverything 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 <egonzalez= [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 > > > > >
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