netdev - Re: [PATCH v3 1/2] net/ipv4: fix IPv4 multicast over network namespaces

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [day] [month] [year] [list]

Message-Id: <20120328.044608.766966633646030583.davem@davemloft.net>
Date:	Wed, 28 Mar 2012 04:46:08 -0400 (EDT)
From:	David Miller <davem@...emloft.net>
To:	bcrl@...ck.org
Cc:	netdev@...r.kernel.org
Subject: Re: [PATCH v3 1/2] net/ipv4: fix IPv4 multicast over network
 namespaces

From: Benjamin LaHaise <bcrl@...ck.org>
Date: Tue, 27 Mar 2012 21:55:32 -0400

> When using multicast over a local bridge feeding a number of LXC guests
> using veth, the LXC guests are unable to get a response from other guests
> when pinging 224.0.0.1.  Multicast packets did not appear to be getting
> delivered to the network namespaces of the guest hosts, and further
> inspection showed that the incoming route was pointing to the loopback
> device of the host, not the guest.  This lead to the wrong network namespace
> being picked up by sockets (like ICMP).  Fix this by using the correct
> network namespace when creating the inbound route entry.
> 
> Signed-off-by: Benjamin LaHaise <bcrl@...ck.org>

Applied.
--
To unsubscribe from this list: send the line "unsubscribe netdev" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html