Test Information

TitleA copy is not looped back if the IPV6_MULTICAST_LOOP option is set to 0
CommandLine./tst_mcast_loop_no_back --log=14.html --title=A copy is not looped back if the IPV6_MULTICAST_LOOP option is set to 0
TestVersionREL_1_1_18
Start2023/01/26 16:32:11
SystemName(null)
KernelVersion(null)

Test Sequence Execution Log

16:32:11Start

== create an IPv6 socket ==
16:32:11socket(domain:AF_INET6, type:SOCK_DGRAM, protocol:0)
16:32:11return sockfd=4
16:32:12tst_get_unused_port() get port 40208

== bind socket to address ==
16:32:12bind(sockfd:4, my_addr:0x3ffe7e78a8c, addrlen:28)
16:32:12return 0

== join to a multicast group on Link0 ==
16:32:13if_nametoindex(ifname:"dummy_ipv6")
16:32:13return 125
16:32:13inet_pton(af:AF_INET6, src:"ff03::1:ff00:100", dst:0x3ffe7e78aa8)
16:32:13return 1, dst=ff03:0000:0000:0000:0000:0001:ff00:0100
16:32:13setsockopt(sockfd:4, level:IPPROTO_IPV6, optname:IPV6_JOIN_GROUP, optval:0x3ffe7e78aa8, optlen:20)
16:32:13return 0

== set IPV6_MULTICAST_IF option to Link0 ==
16:32:13setsockopt(sockfd:4, level:IPPROTO_IPV6, optname:IPV6_MULTICAST_IF, optval:0x3ffe7e7890c, optlen:4)
16:32:13return 0

== disabled IPV6_MULTICAST_LOOP option ==
16:32:13setsockopt(sockfd:4, level:IPPROTO_IPV6, optname:IPV6_MULTICAST_LOOP, optval:0x3ffe7e78910, optlen:4)
16:32:13return 0
16:32:13inet_pton(af:AF_INET6, src:"ff03::1:ff00:100", dst:0x3ffe7e78aa8)
16:32:13return 1, dst=ff03:0000:0000:0000:0000:0001:ff00:0100

== send multicast datagram to the group: fe80::1ce9:d6ff:fe58:abc ==
16:32:13sendto(sockfd:4, buf:0x3ffe7e78914, len:24, flags:0, to:0x3ffe7e78a8c, tolen:28)
16:32:13return 24

== recv message from the group ==
16:32:13recvmsg(sockfd:4, msg:0x3ffe7e78a40, flags:64)
16:32:13return -1
16:32:13close(4)

OK
16:32:13End