r0 = socket$inet6_udp(0xa, 0x2, 0x0)
sendmmsg$inet6(r0, &(0x7f0000002040)=[{{&(0x7f0000000000)={0xa, 0x4e24, 0x0, @ipv4={'\x00', '\xff\xff', @multicast2}}, 0x1c, 0x0, 0x0, &(0x7f0000000380)=[@pktinfo={{0x23, 0x29, 0x32, {@private1}}}], 0x28}}], 0x1, 0x0)