netbsd-6 build error

[6bone%6bone.informatik.uni-leipzig.de@localhost]

hello,

with enabled ipsec the following error occurs:

--- in_proto.o ---
cc1: warnings being treated as errors
/usr/local/src/sys/netinet/in_proto.c: In function 
'esp4_ctlinput_wrapper':
/usr/local/src/sys/netinet/in_proto.c:193:1: error: implicit declaration 
of function 'esp4_ctlinput'
/usr/local/src/sys/netinet/in_proto.c:193:1: error: assignment makes 
pointer from integer without a cast
/usr/local/src/sys/netinet/in_proto.c: At top level:
/usr/local/src/sys/netinet/in_proto.c:193:1: error: 
'esp4_ctlinput_wrapper' defined but not used
*** [in_proto.o] Error code 1


Regards
Uwe