lkml.org 
[lkml]   [1998]   [Aug]   [21]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
From
SubjectRe: Why does struct sock have saddr and daddr?
Date
> 
> daddr = destination
> saddr = sending address of our end
> rcv_saddr = address we bind to
>
> saddr and rcv_saddr may be different as rcv_saddr may be broadcast or
> multicast. We do not however use the broadcast/multicast but the interface
> address as the source of our packet
>

Is this true only for UDP, or does TCP also use the interface addr instead of
the bound addr? Well, thinking about it, the only way we could receive a packet
that didn't have an interface listening on that IP, was if someone force routed
(read, hardwired the ARP table) the packet to our other interface.

I know Sol 2.6 has a bug WRT using random interface addrs when responding via
UDP (they call it load balancing, but it breaks NFS).

Thanks for the info, now I know which things to break :)

--Perry

--
Perry Harrington Linux rules all OSes. APSoft ()
email: perry@apsoft.com Think Blue. /\

-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.rutgers.edu
Please read the FAQ at http://www.altern.org/andrebalsa/doc/lkml-faq.html

\
 
 \ /
  Last update: 2005-03-22 13:44    [W:0.306 / U:0.000 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site