[SOLVED] vmbr-x behavior (ifdown/ifup)

Xahid

Renowned Member
Feb 13, 2014
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Hello,

I was testing something for my environment, what I notice if I use ifdown vmbr1 all the communication take place from vmbr1 will be break (that's normal), but when I activate the vmbr1 using ifup vmbr1, it shows the link is activated, but all the virtual machines using vmbr1 cannot communicate, unless I restart the Proxmox server.

Is this normal behavior of Proxmox or I am missing something ?
 
ifdown removes the bridge, ifup doesn't know which links previously used to be on the bridge, so it can't reassemble them. If you need to make live-changes to the network you need to either apply the differences manually via the CLI or migrate the VMs away, or stop them (or do an online snapshot) etc.