AT_CHECK([ovs-ofctl -vwarn show br0], [0], [stdout])
AT_CHECK_UNQUOTED([STRIP_XIDS stdout], [0], [dnl
OFPT_FEATURES_REPLY: dpid:fedcba9876543210
AT_CHECK([ovs-ofctl -vwarn show br0], [0], [stdout])
AT_CHECK_UNQUOTED([STRIP_XIDS stdout], [0], [dnl
OFPT_FEATURES_REPLY: dpid:fedcba9876543210