r0 = socket$inet6_udp(0xa, 0x2, 0x0)
connect$inet6(r0, &(0x7f0000000000)={0x2, 0x0, 0x0, @loopback}, 0x1c)
sendmmsg$inet6(r0, &(0x7f0000008a80)=[{{&(0x7f0000000040)={0xa, 0x4e24, 0x0, @ipv4={'\x00', '\xff\xff', @multicast1}}, 0x1c, 0x0}}, {{0x0, 0x0, &(0x7f0000002b40)=[{&(0x7f0000002a00)="85", 0xffe3}], 0x1}}, {{0x0, 0x0, &(0x7f0000002f40)=[{&(0x7f0000002c00)='\t', 0x1}], 0x1}}], 0x3, 0x24048040)