r0 = socket$packet(0x11, 0x3, 0x300)
setsockopt$packet_fanout(r0, 0x107, 0x12, &(0x7f0000000080), 0x4)
syz_emit_ethernet(0x4e, &(0x7f00000002c0)={@dev, @dev, @val={@void}, {@mpls_mc={0x8848, {[], @ipv6=@tcp={0x0, 0x6, '\x00\x00\b', 0x14, 0x6, 0x0, @mcast1, @ipv4={'\x00', '\xff\xff', @loopback}, {[], {{0x0, 0x0, 0x41424344, 0x41424344, 0x0, 0x0, 0x5}}}}}}}}, 0x0)