r0 = socket$inet6_tcp(0xa, 0x1, 0x0)
ioctl$sock_inet6_SIOCDELRT(r0, 0x890c, &(0x7f00000003c0)={@private0, @initdev={0xfe, 0x88, '\x00', 0x0, 0x0}, @empty, 0x0, 0x0, 0x0, 0x0, 0x0, 0x80000002})