r0 = socket$inet6_udp(0xa, 0x2, 0x0)
sendmsg$inet6(r0, &(0x7f00000006c0)={&(0x7f0000000040)={0xa, 0x4e22, 0x0, @mcast2={0xff, 0x5}, 0x4}, 0x1c, 0x0}, 0x0)