dhclient does not work on eth1 (xenial)

[Allan Jacobsen]

When running dhclient on eth1 on a server with 2 Ethernet interfaces, I get no ip address, when i run ubuntu xenial. The problem is not there with ubuntu trusty, and is also not there on servers with only 1 Ethernet interface.

I have debugged with tshark on the client, and looking at syslog on the server, and the DHCPDISCOVER is sent, and the server responds with a DHCPOFFER, and that can be seen on the interface of the client, but the software seems to ignore it.

The software version is 4.3.3-5ubuntu12.3 for both isc-dhcp-client and isc-dhcp-common.

The client is a Cisco UCSB-B200-M4 if that makes a difference.

[Ubuntu Foundations Team Bug Bot (crichton)]

Thank you for taking the time to report this bug and helping to make Ubuntu better. It seems that your bug report is not filed about a specific source package though, rather it is just filed against Ubuntu in general. It is important that bug reports be filed about source packages so that people interested in the package can find the bugs about it. You can find some hints about determining what package your bug might be about at https://wiki.ubuntu.com/Bugs/FindRightPackage. You might also ask for help in the #ubuntu-bugs irc channel on Freenode.

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[Allan Jacobsen (allan-j)]

Looking through the other bugs, this might be a duplicate bug of #1606051