Suppressing "Malformed AS_PATH attribute" and "Invalid route ... withdrawn"?

[Robert Scheck]

Hello all,

after updating a system to BIRD 3.x, I see lots of such log messages:

Jun 02 11:52:34 bird[2664336]: transit6: Malformed AS_PATH attribute - AS_SET segment (1) at 26
Jun 02 11:52:34 bird[2664336]: transit6: Invalid route 2608:12a:7453::/48 withdrawn
Jun 02 11:52:34 bird[2664336]: transit6: Invalid route 2608:12a:7426::/48 withdrawn
Jun 02 11:52:34 bird[2664336]: transit6: Invalid route 2608:12a:7444::/48 withdrawn
Jun 02 11:52:34 bird[2664336]: transit6: Invalid route 2608:12a:7435::/48 withdrawn
Jun 02 11:52:34 bird[2664336]: transit6: Invalid route 2608:12a:7425::/48 withdrawn
Jun 02 11:52:34 bird[2664336]: transit6: Invalid route 2608:14a:7523::/48 withdrawn
Jun 02 11:52:34 bird[2664336]: transit6: Malformed AS_PATH attribute - AS_SET segment (1) at 14

As I personally less care about the invalid routes the US DoD (and others)
push into the DFZ, I would like to suppress them (~ 26k log lines within 8
hours) - while still keeping regular BIRD warnings, errors etc.

Maybe I'm overlooking something, but based on the documentation I did not
see how I could suppress just "Malformed AS_PATH attribute" and "Invalid
route ... withdrawn" log messages?

Any pointers? Thank you.


Regards,
  Robert