Subject: regression: bind interface and transmit to ff02::2
To: None <>
From: David Young <>
List: tech-net
Date: 03/22/2006 23:57:17
The kernel used to let me bind(2) to an IPv6 interface---e.g., [sin6_addr
fe80::200:24ff:fec3:4bac sin6_scope_id 1]---and sendto(2) the destination
[sin6_addr ff02::2 sin6_scope_id 0].  I cannot do that any longer.  Now,
sendto exits with EHOSTUNREACH.

I would expect sendto to fail if I hadn't bound the interface and/or set
the multicast interface with setsockopt(,IPPROTO_IPV6,IPV6_MULTICAST_IF,),
but I have done both.  The new behavior seems like a regression to me.


David Young             OJC Technologies      Urbana, IL * (217) 278-3933