r0 = socket$inet6_udp(0xa, 0x2, 0x0)
sendmmsg$inet6(r0, &(0x7f0000001cc0)=[{{&(0x7f0000000000)={0xa, 0x4e21, 0x0, @mcast2, 0x4}, 0x1c, 0x0, 0x0, &(0x7f00000006c0)=[@rthdrdstopts={{0x18}}, @pktinfo={{0x24, 0x29, 0x32, {@private0}}}], 0x40}}, {{0x0, 0x0, &(0x7f0000001b40)=[{&(0x7f0000000780)="ef", 0x1}], 0x1}}], 0x2, 0x8040)