Hoi Petr, We merged a relevant VPP -> Linux interface sync change in https://gerrit.fd.io/r/c/vpp/+/33709 just this week. The code that does this sync is in lcp_interface_sync.c:100 and lcp_interface.c:1004. Does your build include that code, and did you issue "lcp lcp-sync on" ?
On Fri, Jan 14, 2022 at 3:34 PM Petr Boltík <petr.bol...@gmail.com> wrote: > Hello, > I have found a cosmetic issue with a linux-cp TAP device (tested both > plugins - original and patched linux-cp 31122 ). If you try to add multiple > LCP TAP interfaces, sometimes there is bug in "vppctl show interface" > output. MTU at the TAP is randomly shown incorrectly like: > tap10 11 up 4/0/0/0 > tap18 19 up 1500/0/0/0 > tap26 27 up 9216/0/0/0 > > MTU 1500 pass to the control plane successfully and MTU inside netns is > correct. Test script below, you may run it a few times to see an issue. I > have run it inside netns "controlplane". Tested 21.10 and > 22.02-rc0~347-g5dec92de6. > > Regards > Petr > > #!/bin/bash > vppctl lcp default netns controlplane > for i in $(seq 1 30); do > vppctl create loopback interface instance $i > vppctl set interface mtu packet 1500 loop$i > vppctl lcp create loop$i host-if br$i > vppctl set interface state loop$i up > done > > > > > -- Pim van Pelt <p...@ipng.nl> PBVP1-RIPE - http://www.ipng.nl/
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