netdev - radvd and auto-ipv6 address regression from 2.6.31 to 2.6.34+

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-next>] [day] [month] [year] [list]

Message-ID: <4CD47622.5040507@candelatech.com>
Date:	Fri, 05 Nov 2010 14:24:50 -0700
From:	Ben Greear <greearb@...delatech.com>
To:	NetDev <netdev@...r.kernel.org>
Subject: radvd and auto-ipv6 address regression from 2.6.31 to 2.6.34+

I'm seeing something strange.  I'm running radvd on a VETH interface (veth0 for argument)
with a single global IPv6 address (and a link-local address).

On hacked 2.6.31, this works as I expect:  The veth0 interface does not gain or lose any
IPv6 addresses and peer VETH port gets an auto-created IPv6 addresses.

On hacked 2.6.34 and 2.6.36 kernels, however, the veth0 gains a new address that appears
to be generated similar to other IPs associated with auto-creation via radvd.

I have not yet tested intervening kernels or physical interfaces between two machines.

So, the question is:  Is the new behaviour on purpose, or is it a regression bug?

Thanks,
Ben

-- 
Ben Greear <greearb@...delatech.com>
Candela Technologies Inc  http://www.candelatech.com

--
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