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
| ||
|
Date: Thu, 22 Nov 2012 01:09:13 +0100 From: Bernhard Schmidt <berni@...kenwald.de> To: netdev@...r.kernel.org Subject: Re: VXLAN multicast receive not working On Thu, Nov 22, 2012 at 01:05:25AM +0100, Bernhard Schmidt wrote: > The same VXLAN domain is defined on the Nexus 1000V and a VM is attached > to it. When I send some broadcast traffic down vxlan0 (i.e. ping > 10.1.1.2 which generates an ARP request) the VM sees the packet just > fine. > > When I do it the other way around (the VM sends a broadcast ARP for > 10.1.1.3) I see a packet coming into eth1 on the multicast group, but > vxlan0 stays silent. I think I found a possible reason, my vxlan interface is on top of eth1 7: vxlan0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1450 qdisc noqueue state UNKNOWN mode DEFAULT link/ether 96:06:c6:cf:a0:2e brd ff:ff:ff:ff:ff:ff vxlan id 12340 group 239.0.0.42 dev eth1 port 32768 61000 ageing 300 but the multicast group is joined only on eth0 root@...scDA-VXLAN:~/iproute2# ip maddr 1: lo inet 224.0.0.1 inet6 ff02::1 2: eth0 link 33:33:00:00:00:01 link 01:00:5e:00:00:01 link 33:33:ff:8e:0d:c7 link 01:00:5e:00:00:2a inet 239.0.0.42 inet 224.0.0.1 inet6 ff02::1:ff8e:dc7 users 2 inet6 ff02::1 4: eth1 link 33:33:00:00:00:01 link 01:00:5e:00:00:01 link 33:33:ff:8e:0d:c8 inet 224.0.0.1 inet6 ff02::1:ff8e:dc8 inet6 ff02::1 7: vxlan0 link 33:33:00:00:00:01 link 01:00:5e:00:00:01 link 33:33:ff:cf:a0:2e inet 224.0.0.1 inet6 ff02::1:ffcf:a02e inet6 ff02::1 At first glance I did not spot the issue with my two weeks of C, so someone else has to hunt this down. Regards, Bernhard -- 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
Powered by blists - more mailing lists