https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=267232 broke operation on tun devices as the local patches got simply removed. patch-zae-fix_tun fixes this. Another improvement (logging with higher granularity) was removed as well -- see patch-zaf-log_seconds.
Created attachment 250421 [details] patch-zae-fix_tun
Created attachment 250422 [details] patch-zaf-log_seconds
Note: I tested operation on tun(0) only for UDP...