r0 = socket$inet6_tcp(0xa, 0x1, 0x0)
ioctl$sock_inet6_SIOCADDRT(r0, 0x890b, &(0x7f0000000000)={@ipv4={'\x00', '\xff\xff', @multicast2}, @loopback, @rand_addr=' \x01\x00', 0x0, 0x0, 0x0, 0x0, 0x0, 0x284})