WEBUI Network Add Brigde MTU Err


Aug 9, 2019
pve Version: Virtual Environment 6.1-3 adding Brigde shows the following error. But Virtual Environment 5.4-11 does not have this Error
Manual configuration is fine, I can cancel mtu check there

interface 'vmbr110' - mtu 1500 is lower than 'bond0' - mtu 9000 (500)

6.1-3 Network Config:

auto bond0
iface bond0 inet manual
        bond-slaves eno1 eno2
        bond-miimon 100
        bond-mode 802.3ad
        bond-xmit-hash-policy layer2+3
        mtu 9000
        bond-lacp-rate fast
Proxmox VE 6.x works a little different than PVE 5.x. In any case, the MTU needs to be the same for all involved interfaces, otherwise it will result in fragmentation. That is something that should be avoided.


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