Subject: multicast vif and if_detach()
To: None <>
From: Jun-ichiro itojun Hagino <>
List: tech-net
Date: 05/15/2003 01:50:51
	what should happen to IPv4 multicast vif when if_detach() is called
	and struct ifnet is going away?  also what should happen to
	multicast routing table?  if the kernel nukes vif by its own decision,
	what happens to mrouted and friends?

	currently there's no action taken on if_detach(), therefore multicast
	vif has dangling pointer to nonexistent ifnet.
	(same question goes to IPv6 multicast)