Re: sendmsg ignoring bind?

[Herbert Xu <herbert@xxxxxxxxxxxxxxxxxxx>]

On Fri, May 20, 2005 at 03:20:09PM +0200, Wichert Akkerman wrote:
> 
> I had to hack strace a bit to decode that. The cmsg option turns out
> to be somewhat useless:

I suppose we can expect to have this in a future release of strace :)

> cmsg_type=IP_PKTINFO, 
> {ifindex=0,ipi_spec_dst=inet_addr("0.0.0.0"),ipi_addr=("0.0.0.0")}}, 
> msg_flags=0},

This is far from useless.  This will set the source address back to zero
which essentially means that the bound address is ignored.
-- 
Visit Openswan at http://www.openswan.org/
Email: Herbert Xu ~{PmV>HI~} <herbert@xxxxxxxxxxxxxxxxxxx>
Home Page: http://gondor.apana.org.au/~herbert/
PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt