Public bug reported: Some CNA adapters (such as the Cisco VIC) pass 802.1P frames. These are frames that have a TCI field on them but the vlan tag is 0 (this is so they can pass the priority bits down to the server).
The dhclient in xenial does not work with these adapters (dhclient is interpreting any tag as invalid and drops the frames when it really should just be checking the vlan portion of the TCI field). The fix has already been applied upstream in isc-dhcp 4.3.4 by the following commit: https://source.isc.org/cgi- bin/gitweb.cgi?p=dhcp.git;a=commitdiff;h=f10cbbface262ba51394b2c8ccf402addf7bd6b1 Request to have this backported to xenial for the next release (or move to 4.3.4 to pickup the fix). ** Affects: isc-dhcp (Ubuntu) Importance: Undecided Status: New -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1580694 Title: dhclient does not work with some CNA adapters To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/isc-dhcp/+bug/1580694/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
