It will be used for ICMPv6 next, so pass in the proto. Also, use the ipproto constants rather than hardcoding the mysterious number. Change-Id: I57b68bdd2d39fff75f82affe955aff9245de246b Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
Only use the ones in types/ipproto now. Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
Part of #19. Signed-off-by: David Anderson <danderson@tailscale.com>