The ethtool package is only used to help ovs-bugtool create bug
reports and does not prevent the script from running if it's
missing. Making it a requirement for installation is a bit
draconian.
Package: openvswitch-common
Architecture: any
-Depends: ${shlibs:Depends}, openssl, ${misc:Depends}, python, ethtool
+Depends: ${shlibs:Depends}, openssl, ${misc:Depends}, python
+Suggests: ethtool
Description: Open vSwitch common components
openvswitch-common provides components required by both openvswitch-switch
and openvswitch-controller.