Ubuntu
dhcp3 package

  1. Bug #295520
  2. Comment #6

Comment 6 for bug 295520

Revision history for this message
gsupport (support-gatsby) wrote :

Reading the linux-netdev archives ( http://marc.info/?l=linux-netdev&m=124836694205107&w=2 );

 "ISC dhcp3d [sic] does not use libpcap, and does not query the packet socket for the VLAN tag, so it treats every VLAN's packets as for the default VLAN.".

This is just as the OP describes. So unless the behaviour of the raw interface changes back to the old way or ISC adopts libpcap, then a single instance of dhcpd will never be able to handle the default interface with additional VLAN interfaces off the same NIC.

A suggested enhancement/workaround would be to have out-of-the-box support for an instance per interface.