r0 = socket$inet6_udp(0xa, 0x2, 0x0)
setsockopt$inet6_int(r0, 0x29, 0x1a, &(0x7f0000000140)=0x4, 0x4)
connect$inet6(r0, &(0x7f00000000c0)={0xa, 0x0, 0x0, @ipv4={'\x00', '\xff\xff', @multicast1}}, 0x1c)