Test Information

TitleA copy is looped back if the IPV6_MULTICAST_LOOP option is set to 1
CommandLine./tst_mcast_loop_back --log=13.html --title=A copy is looped back if the IPV6_MULTICAST_LOOP option is set to 1
TestVersionREL_1_1_18
Start2023/01/17 08:40:20
SystemName(null)
KernelVersion(null)

Test Sequence Execution Log

08:40:20Start

== create an IPv6 socket ==
08:40:20socket(domain:AF_INET6, type:SOCK_DGRAM, protocol:0)
08:40:20return sockfd=4
08:40:21tst_get_unused_port() get port 45639

== bind socket to address ==
08:40:21bind(sockfd:4, my_addr:0x7fffcfc7dcd0, addrlen:28)
08:40:21return 0

== join to a multicast group on Link0 ==
08:40:21if_nametoindex(ifname:"dummy_ipv6")
08:40:21return 106
08:40:21inet_pton(af:AF_INET6, src:"ff03::1:ff00:100", dst:0x7fffcfc7dcf0)
08:40:21return 1, dst=ff03:0000:0000:0000:0000:0001:ff00:0100
08:40:21setsockopt(sockfd:4, level:IPPROTO_IPV6, optname:IPV6_JOIN_GROUP, optval:0x7fffcfc7dcf0, optlen:20)
08:40:21return 0

== set IPV6_MULTICAST_IF option to Link0 ==
08:40:21setsockopt(sockfd:4, level:IPPROTO_IPV6, optname:IPV6_MULTICAST_IF, optval:0x7fffcfc7db98, optlen:4)
08:40:21return 0

== enabled IPV6_MULTICAST_LOOP option ==
08:40:21setsockopt(sockfd:4, level:IPPROTO_IPV6, optname:IPV6_MULTICAST_LOOP, optval:0x7fffcfc7db9c, optlen:4)
08:40:21return 0
08:40:21inet_pton(af:AF_INET6, src:"ff03::1:ff00:100", dst:0x7fffcfc7dcf0)
08:40:21return 1, dst=ff03:0000:0000:0000:0000:0001:ff00:0100

== send multicast datagram to the group ==
08:40:21sendto(sockfd:4, buf:0x407010, len:17, flags:0, to:0x7fffcfc7dcd0, tolen:28)
08:40:21return 17

== recv message from the group ==
08:40:22recvmsg(sockfd:4, msg:0x7fffcfc7dc80, flags:64)
08:40:22return 17
08:40:22close(4)

OK
08:40:22End