r0 = socket$inet6_udp(0xa, 0x2, 0x0)
connect$inet6(r0, &(0x7f0000000600)={0xa, 0x0, 0x0, @dev, 0x2}, 0x1c)
sendmmsg$inet6(r0, &(0x7f0000008240)=[{{0x0, 0x0, 0x0}}, {{&(0x7f0000002480)={0xa, 0x0, 0x0, @ipv4={'\x00', '\xff\xff', @multicast2}}, 0x1c, 0x0}}], 0x2, 0x8800)