Re: [RFC PATCH] sctp: Don't lookup dst if transport dst is still valid

From: Fan Du <redacted>
Date: Fri, 12 Jul 2013 11:15:10 +0800

But problem still arise when we attempt to delete address
in multi-home mode, deleting an IPv6 address does not invalidate
any dst which source address is the same at the deleted one.
Which means sctp cannot rely on ip6_dst_check in this scenario.

I still cannot understand why this is an SCTP specific issue.

Specifically, I cannot see why address addition/deletion doesn't
cause problems for cached ipv6 routes in UDP and TCP sockets too.