em0 doesn't work after upgrading from 11.0 to 11.1

[Khitai Pang]

Hi,


After the first reboot after upgrading my freebsd (in a kvm guest hosted on CentOS 6) from 11.0 to 11.1, em0 couldn't get IP address from DHCP:


em0: Watchdog timeout -- resetting

em0: link state changed to DOWN

em0: link state changed to UP


The above messages are repeated in dmesg.


I reran "freebsd-update install" to complete the upgrade and rebooted the host again,  and the issue was still there.


Networking worked perfectly fine before the upgrade.  /etc/rc.conf:


hostname="..."

ifconfig_em0="DHCP"

sshd_enable="YES"

dumpdev="AUTO"


Any idea?


Regards

Khitai