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My Proxmox host is the GW for my VM's indeed. It's a port routed subnet for the host, so that is why.

Hi, Sure sorry for the delay but can you post yours ? I would like to test upfront, I might see some flaw. Thanks!

No problem, me as well! Let's teamup again :)

Any update on this from your side spirit ?

It's a little bit hard to answer, it worked before and ipv6 forwarding is enabled: # cat /proc/sys/net/ipv6/conf/all/forwarding 1 From a VM it's stalled after the command has been started but on Proxmox itself it goes OK. Ping works great from the VM to HV Traceroute from VM to HV gives...

IPv4 works, IPv6 doesn't. Sorry for the missing detail! IPv6 has eth0 on forward, the vmbr11 and the rest is 0.

OK I'm testing this out and it's strange. I can stil ping my Proxmox bridge but nothing to the outside world. On my Proxmox box itself I can ping/traceroute the outside world. So I'm unsure what goes wrong here.

Sorry for the delay, I will report back asap :) Thanks again!

Great, going to try it in a few hours! Is the bond change applied as well (yet) ?

I already thought, good work! It's nice to work with a reference and see if changes just should be made and Cumulus is also just seeing if there are bugs and like input from the Proxmox side. OK, but how would this work for the gateway ? you get a gateway and gateway6 ? I try to keep it also a...

Another update on this. IPv6 doesn't seem to forward at all, only one bridge is in :1 mode, vmbr11 and none of the interfaces is with ip-forward on on the IPv6 interfaces/aliases. Maybe another bug, but a terrible one :(

You were very welcome, great! To be precise; We need the "workaround" or the package will be updated in some time and will float into Proxmox ? I'm not sure who maintains what at the moment but that it's managed well is for sure! :) (need to read some more about Cumulus)

That works indeed! I must say I only need to do it on the ethX interface that has an address. I have 2 interfaces in a bond and they can live with :0 as the bridge takes over I think ? I have read in the link you gave me earlier it's a bug that Cumulus wants/needs to fix ? Thanks a lot for...

New update, this makes it work again: echo '1' => /proc/sys/net/ipv4/conf/eth<X>/forwarding

It's the same config as in my startpost. I see that ethX are forwarding:0 after the reload which are forwarding:1 before. The bridges, except vmbr11, are all :0 before and after. Does that help ?

Hi, Sorry for the delay but I needed spare server for this to test at the moment and other upcoming things as well. I just tried without changing anything in the interfaces file:" ifreload -a # cat /proc/sys/net/ipv4/ip_forward 1 # grep "" /proc/sys/net/ipv4/conf/*/forwarding...

Will do ASAP as I need to use some textbox for it :) Thanks for the link, we start to become a team ;)

I need to check, not able at the moment, sorry for that and inform you later about it! I don't have any static routes in the interfaces file (that is where routers are for ;))

It's a subnet routed on the eth0 port so the eth0 address is the gateway of the subnet.

OK, everything works so far but traffic between vmbr11 and eth0 stops floating after a ifreload -a. On the proxmox machine itself I can ping to the outside world and the IP's on tap interfaces of vmbr11 and vmbr11 itself but not over eth0 anymore, so form the outside world. Maybe I'm missing...