vnet_feature_enable_disable ("ip4-unicast", "ip4-map", sw_if_index,
is_enable ? 1 : 0, 0, 0);
vnet_feature_enable_disable ("ip6-unicast", "ip6-map", sw_if_index,
vnet_feature_enable_disable ("ip4-unicast", "ip4-map", sw_if_index,
is_enable ? 1 : 0, 0, 0);
vnet_feature_enable_disable ("ip6-unicast", "ip6-map", sw_if_index,