+ OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_zones.h],
+ [nf_ct_zone_init])
+ OVS_GREP_IFELSE([$KSRC/include/net/netfilter/nf_conntrack_labels.h],
+ [nf_connlabels_get])
+ OVS_GREP_IFELSE([$KSRC/include/net/netfilter/ipv6/nf_defrag_ipv6.h],
+ [nf_ct_frag6_consume_orig])
+ OVS_GREP_IFELSE([$KSRC/include/net/netfilter/ipv6/nf_defrag_ipv6.h],
+ [nf_ct_frag6_output])