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
Start2023/02/03 01:00:20
SystemName(null)
KernelVersion(null)

Test Sequence Execution Log

01:00:20Start

== create an IPv6 socket ==
01:00:20socket(domain:AF_INET6, type:SOCK_DGRAM, protocol:0)
01:00:20return sockfd=4
01:00:21tst_get_unused_port() get port 37895

== bind socket to address ==
01:00:22bind(sockfd:4, my_addr:0x3ffec77885c, addrlen:28)
01:00:22return 0

== join to a multicast group on Link0 ==
01:00:22if_nametoindex(ifname:"dummy_ipv6")
01:00:22return 3
01:00:22inet_pton(af:AF_INET6, src:"ff03::1:ff00:100", dst:0x3ffec778878)
01:00:22return 1, dst=ff03:0000:0000:0000:0000:0001:ff00:0100
01:00:22setsockopt(sockfd:4, level:IPPROTO_IPV6, optname:IPV6_JOIN_GROUP, optval:0x3ffec778878, optlen:20)
01:00:22return 0

== set IPV6_MULTICAST_IF option to Link0 ==
01:00:22setsockopt(sockfd:4, level:IPPROTO_IPV6, optname:IPV6_MULTICAST_IF, optval:0x3ffec7786dc, optlen:4)
01:00:22return 0

== disabled IPV6_MULTICAST_LOOP option ==
01:00:22setsockopt(sockfd:4, level:IPPROTO_IPV6, optname:IPV6_MULTICAST_LOOP, optval:0x3ffec7786e0, optlen:4)
01:00:22return 0
01:00:22inet_pton(af:AF_INET6, src:"ff03::1:ff00:100", dst:0x3ffec778878)
01:00:22return 1, dst=ff03:0000:0000:0000:0000:0001:ff00:0100

== send multicast datagram to the group: fe80::4caa:b0ff:fe5b:7108 ==
01:00:22sendto(sockfd:4, buf:0x3ffec7786e4, len:25, flags:0, to:0x3ffec77885c, tolen:28)
01:00:22return 25

== recv message from the group ==
01:00:22recvmsg(sockfd:4, msg:0x3ffec778810, flags:64)
01:00:22return -1
01:00:22close(4)

OK
01:00:22End