r0 = socket$inet6_udp(0xa, 0x2, 0x0)
sendmmsg$inet6(r0, &(0x7f0000004740)=[{{&(0x7f00000000c0)={0xa, 0x4e24, 0x0, @ipv4={'\x00', '\xff\xff', @dev}}, 0x1c, 0x0}}, {{0x0, 0x0, &(0x7f0000000400)=[{&(0x7f0000000240)="c3", 0x7fffeffe}, {&(0x7f00000002c0)="03", 0x1}, {&(0x7f0000000340)="c6", 0x1}], 0x3}}, {{0x0, 0x0, &(0x7f0000000700)=[{&(0x7f0000000480)="97", 0x1}], 0x1}}], 0x3, 0x8440)