netdev - Ethernet bridge not passing VLAN'd traffic

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>] [day] [month] [year] [list]

Date:	Tue, 19 Oct 2010 16:24:05 -0700
From:	Erik Schweigert <ejschweigert@...il.com>
To:	netdev@...r.kernel.org
Subject: Ethernet bridge not passing VLAN'd traffic

Hello list,

I have configured a transparent ethernet bridge containing two network
interfaces: eth0, eth1 in br0.  IP forwarding is enabled i.e. cat
/proc/sys/net/ipv4/ip_forward = 1.

All traffic destined through my Linux machine has the 802.1Q tag
(VLAN).  However, only ARP with the VLAN tags passes through the
machine correctly (100% of the time) and broadcast and multicast
appears to work.  It 'seems' IP layer and above is being dropped if it
is unicast, or intermittently works ( +/- 1 of 10 ICMP passes
through).

All non-VLAN'd traffic passes through my machine flawlessly.

arptables, ebtables, and IPtables are all flushed, so there is no
possibility of any traffic being blocked.

Is there a caveat with ethernet bridging that does not permit VLAN'd traffic?

Any help or suggestions is greatly appreciated!

Thanks,

Erik
--
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