<dec f='src/src/sys/netinet6/icmp6.c' l='139' type='int'/>
<use f='src/src/sys/netinet6/icmp6.c' l='179' u='r' c='icmp6_init'/>
<def f='src/src/sys/netinet6/in6_proto.c' l='523' type='int'/>
<doc f='src/src/sys/netinet6/in6_proto.c' l='518'>/*
 * BSDI4 defines these variables in in_proto.c...
 * XXX: what if we don&apos;t define INET? Should we define pmtu6_expire
 * or so? (jinmei@kame.net 19990310)
 */</doc>
