[head tinderbox] failure on i386/i386

[FreeBSD Tinderbox]

TB --- 2006-10-17 12:10:33 - tinderbox 2.3 running on freebsd-current.sentex.ca
TB --- 2006-10-17 12:10:33 - starting HEAD tinderbox run for i386/i386
TB --- 2006-10-17 12:10:33 - cleaning the object tree
TB --- 2006-10-17 12:11:23 - checking out the source tree
TB --- 2006-10-17 12:11:23 - cd /tinderbox/HEAD/i386/i386
TB --- 2006-10-17 12:11:23 - /usr/bin/cvs -f -R -q -d/home/ncvs update -Pd -A src
TB --- 2006-10-17 12:19:11 - building world (CFLAGS=-O2 -pipe)
TB --- 2006-10-17 12:19:11 - cd /src
TB --- 2006-10-17 12:19:11 - /usr/bin/make -B buildworld
>>> World build started on Tue Oct 17 12:19:12 UTC 2006
>>> Rebuilding the temporary build tree
>>> stage 1.1: legacy release compatibility shims
>>> stage 1.2: bootstrap tools
>>> stage 2.1: cleaning up the object tree
>>> stage 2.2: rebuilding the object tree
>>> stage 2.3: build tools
>>> stage 3: cross tools
>>> stage 4.1: building includes
>>> stage 4.2: building libraries
[...]
cc -O2 -pipe  -Wsystem-headers -Werror -Wall -Wno-format-y2k -W -Wno-unused-parameter -Wstrict-prototypes -Wmissing-prototypes -Wpointer-arith -Wno-uninitialized -c /src/lib/libnetgraph/sock.c
In file included from /src/lib/libnetgraph/sock.c:47:
/obj/src/tmp/usr/include/netgraph/ng_socket.h:64: error: syntax error before "sa_family_t"
/src/lib/libnetgraph/sock.c: In function `NgMkSockNode':
/src/lib/libnetgraph/sock.c:101: error: structure has no member named `sg_family'
/src/lib/libnetgraph/sock.c:151: error: structure has no member named `sg_family'
/src/lib/libnetgraph/sock.c: In function `NgSendData':
/src/lib/libnetgraph/sock.c:276: error: structure has no member named `sg_family'
*** Error code 1

Stop in /src/lib/libnetgraph.
*** Error code 1

Stop in /src/lib.
*** Error code 1

Stop in /src.
*** Error code 1

Stop in /src.
*** Error code 1

Stop in /src.
*** Error code 1

Stop in /src.
TB --- 2006-10-17 12:36:10 - WARNING: /usr/bin/make returned exit code  1 
TB --- 2006-10-17 12:36:10 - ERROR: failed to build world
TB --- 2006-10-17 12:36:10 - tinderbox aborted
TB --- 0.79 user 2.78 system 1536.96 real