Restore ability to send ICMP and ICMPv6 redirects. It was lost when tryforward appeared. Now ip[6]_tryforward will be enabled only when sending redirects for corresponding IP version is disabled via sysctl. Otherwise will be used default forwarding function. PR: 221137 Submitted by: mckay@ MFC after: 2 weeks
head/sys/netinet/ip_input.c
head/sys/netinet6/ip6_input.c