r0 = socket$inet6_udp(0xa, 0x2, 0x0)
sendmsg$inet6(r0, &(0x7f0000000240)={&(0x7f0000000040)={0xa, 0x4e23, 0x0, @mcast1}, 0x1c, 0x0, 0x0, &(0x7f0000000200)=[@hoplimit_2292={{0x14}}], 0x18}, 0x0)