r0 = socket$inet6_udp(0xa, 0x2, 0x0)
sendmmsg$inet6(0xffffffffffffffff, &(0x7f0000004bc0)=[{{0x0, 0x0, 0x0}}, {{0x0, 0x0, 0x0}}, {{0x0, 0x0, 0x0}}, {{0x0, 0x0, 0x0}}, {{0x0, 0x0, 0x0}}, {{&(0x7f00000027c0)={0xa, 0x4e22, 0x0, @mcast2}, 0x1c, 0x0, 0x0, &(0x7f0000003880)=[@tclass={{0x14}}], 0x18}}], 0x6, 0x0)
sendmmsg$inet6(r0, &(0x7f0000004d00), 0x2f, 0x0)