r0 = socket$inet6_udp(0xa, 0x2, 0x0)
sendmmsg$inet6(r0, &(0x7f0000003840)=[{{&(0x7f0000000040)={0xa, 0x4e20, 0x0, @loopback={0xff00000000000000, 0x7}}, 0x1c, 0x0}}], 0x1, 0x0)