Hi all, I'm seeing the same problem
The system is running stretch, it is an NFS client with OVS networking I also intermittently assist in maintaining Debian's NFS packages but this problem doesn't look like it relates to the NFS package. Here is my /etc/network/interfaces auto lo iface lo inet loopback auto ovsbr0 iface ovsbr0 inet dhcp ovs_type OVSBridge ovs_ports eth0 iface ovsbr0 inet6 dhcp accept_ra 1 ovs_type OVSBridge ovs_ports eth0 allow-ovsbr0 eth0 iface eth0 inet manual ovs_bridge ovsbr0 ovs_type OVSPort Regards, Daniel