The NetBSD-current/i386 build is working again. The following commits were made between the last failed build and the successful build:
2022.09.03.20.29.30 thorpej src/sys/rump/net/lib/libnetmpls/Makefile,v 1.6 2022.09.03.20.29.30 thorpej src/sys/rump/net/lib/libnetmpls/Makefile.inc,v 1.3 2022.09.03.20.29.31 thorpej src/sys/net/if_mpls.c,v 1.41 Logs can be found at: http://releng.NetBSD.org/b5reports/i386/commits-2022.09.html#2022.09.03.20.29.31