reintroduce support for keepalives.
authordlg <dlg@openbsd.org>
Thu, 8 Feb 2018 04:58:55 +0000 (04:58 +0000)
committerdlg <dlg@openbsd.org>
Thu, 8 Feb 2018 04:58:55 +0000 (04:58 +0000)
commit54fc14edb8e865a7c7cea20937dce12585b31555
treed49202b1a0ed9a97710f8bb046c21f9baa5e1c3b
parent8d4c5dd784efe9d35fc378ffdbf6f2a5dc1670f9
reintroduce support for keepalives.

there's a couple of bug fixes in here too. this properly initializes
the ttl on the tunnel, and it clears the ip_off header.

requested by claudio@
sys/net/if_gre.c