r0 = socket$inet_tcp(0x2, 0x1, 0x0)
setsockopt$inet_group_source_req(r0, 0x0, 0x1a, &(0x7f0000000000)={0x2, {{0x2, 0x0, @multicast1}}, {{0x2, 0x0, @broadcast}}}, 0x108)