The same issue using the VTI interface. Tested in 1.4.3
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Aug 29 2025
Aug 28 2025
I suggest just removing buffer-size option - in data/templates/pmacct/uacctd.conf.j2 it is translated to pmacct option plugin_pipe_size - specific to pmacct option about pipe size between processes of pmacct.
ipt_NETFLOW's sndbuf is size of output socket buffer in bytes with system default as default - no relation to plugin_pipe_size pmacct option, I don't think there is need to publish it via vyos CLI.
The build script was modified to work correctly.
Quick note on this. It'll maintain the existing AS-Path in the advertisements, but it COULD change the behavior of route rejection on received routes.
My opinion: the problem is not technical but rather lies in the documentation. Any attempts to change the behavior of set interfaces bridge br0 ip adjust-mss will result in losing important capabilities.
Work is here https://github.com/vyos/vyos.vyos/pull/433
@o.kuchmystyi look slike we now have three places to clamp the MSS:
Aug 27 2025
Thanks for the report: this was a regression due to the introduction of an atomic write on save, which did not respect the bind mount directory /config. Reverting pending a comprehensive solution:
https://github.com/vyos/vyos-1x/pull/4683
the solution to this issue as worked up in our private chat is - for the rest of the world:
The VyOS 1.3.x is EOL
for the newest versions fix here https://github.com/vyos/vyos-1x/pull/4663
Tested in VyOS 2025.08.25-0020-rolling and works as expected.
Below are the test results:
Aug 26 2025
Some disappointing news though, after more testing on a non-vyos box, I was not able to get offload to work. Adding the representor device to the flowtable with HW offload flag works, but flows routed through the child netdev don't get the HW_OFFLOAD flag in conntrack -L, so they're not being offloaded.
I don't have any thoughts on how to fix this. The config templates don't seem to match the intent of the CLI, so perhaps I'm not understanding how the templates are used.