131     int                 sock;  in CreateIcmp6Socket()  local
139     sock = SocketWithCloseExec(AF_INET6, SOCK_RAW, IPPROTO_ICMPV6, kSocketBlock);  in CreateIcmp6Socket()
140     VerifyOrDie(sock != -1, OT_EXIT_ERROR_ERRNO);  in CreateIcmp6Socket()
148     rval = setsockopt(sock, IPPROTO_ICMPV6, ICMP6_FILTER, &filter, sizeof(filter));  in CreateIcmp6Socket()
152     rval = setsockopt(sock, IPPROTO_IPV6, IPV6_RECVPKTINFO, &kEnable, sizeof(kEnable));  in CreateIcmp6Socket()
156 …rval = setsockopt(sock, IPPROTO_RAW, IPV6_CHECKSUM, &kIpv6ChecksumOffset, sizeof(kIpv6ChecksumOffs…  in CreateIcmp6Socket()
158 …rval = setsockopt(sock, IPPROTO_IPV6, IPV6_CHECKSUM, &kIpv6ChecksumOffset, sizeof(kIpv6ChecksumOff…  in CreateIcmp6Socket()
163     rval = setsockopt(sock, IPPROTO_IPV6, IPV6_RECVHOPLIMIT, &kEnable, sizeof(kEnable));  in CreateIcmp6Socket()
166     rval = setsockopt(sock, IPPROTO_IPV6, IPV6_UNICAST_HOPS, &kHopLimit, sizeof(kHopLimit));  in CreateIcmp6Socket()
169     rval = setsockopt(sock, IPPROTO_IPV6, IPV6_MULTICAST_HOPS, &kHopLimit, sizeof(kHopLimit));  in CreateIcmp6Socket()
173     rval = setsockopt(sock, SOL_SOCKET, SO_BINDTODEVICE, aInfraIfName, strlen(aInfraIfName));  in CreateIcmp6Socket()
175     rval = setsockopt(sock, IPPROTO_IPV6, IPV6_BOUND_IF, aInfraIfName, strlen(aInfraIfName));  in CreateIcmp6Socket()
179     return sock;  in CreateIcmp6Socket()
195     int                sock;  in CreateNetLinkSocket()  local
199     sock = SocketWithCloseExec(AF_NETLINK, SOCK_DGRAM, NETLINK_ROUTE, kSocketBlock);  in CreateNetLinkSocket()
200     VerifyOrDie(sock != -1, OT_EXIT_ERROR_ERRNO);  in CreateNetLinkSocket()
206     rval = bind(sock, reinterpret_cast<struct sockaddr *>(&addr), sizeof(addr));  in CreateNetLinkSocket()
209     return sock;  in CreateNetLinkSocket()
297     int          sock;  in GetFlags()  local
303     sock = SocketWithCloseExec(AF_INET6, SOCK_DGRAM, IPPROTO_IP, kSocketBlock);  in GetFlags()
304     VerifyOrDie(sock != -1, OT_EXIT_ERROR_ERRNO);  in GetFlags()
310     if (ioctl(sock, SIOCGIFFLAGS, &ifReq) == -1)  in GetFlags()
321     close(sock);  in GetFlags()