Hi guys im new to VyOS, im currently running VyOS rolling just to try it and I am confused as to why dhcp servers dont work over a bridge interface but they work on a Ethernet interface. From my understanding Ethernet interfaces are routed (layer3) and bridge interfaces are the equivalent to a switchport in cisco ios? (layer 2). Therefore, I dont understand why DHCP works on ethernet ports in 1.5 and NOT on bridge ports. (it seemed to work for me on old vyatta)
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Check the kea-dhcp-server logs. The similar issue described here https://forum.vyos.io/t/cant-get-dhcp-server-to-work-on-bridge-interface-on-1-5/
BTW which version?
Do you use VLANs?
show conf commands | match “dhcp|eth|bridge|firew”
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