r0 = socket$inet6_udp(0xa, 0x2, 0x0)
connect$inet6(r0, &(0x7f0000000000)={0xa, 0x4ea0, 0x0, @ipv4={'\x00', '\xff\xff', @local}}, 0x1c)
sendmsg$inet6(r0, &(0x7f0000001cc0)={0x0, 0x0, 0x0, 0x0, &(0x7f0000001940)=[@rthdrdstopts={{0x18}}], 0xf}, 0x0)