NLM_F_ACK 942 kernel/audit.c } else if (nlh->nlmsg_flags & NLM_F_ACK) NLM_F_ACK 461 net/ipv4/netfilter/ip_queue.c if (flags & NLM_F_ACK) NLM_F_ACK 464 net/ipv6/netfilter/ip6_queue.c if (flags & NLM_F_ACK) NLM_F_ACK 1695 net/netlink/af_netlink.c if (nlh->nlmsg_flags & NLM_F_ACK || err)