r0 = socket$inet6_udp(0xa, 0x2, 0x0)
connect$inet6(r0, &(0x7f0000000000)={0xa, 0x4e20, 0x0, @ipv4={'\x00', '\xff\xff', @local}}, 0x1c)
sendmmsg$inet6(r0, &(0x7f0000000ec0)=[{{0x0, 0x0, 0x0}}, {{&(0x7f00000007c0)={0xa, 0x4e20, 0x0, @private2}, 0x1c, 0x0, 0x0, &(0x7f0000000b00)=[@rthdr_2292={{0x18, 0x29, 0x3e}}], 0x18}}], 0x2, 0x0)