Niels Ferguson and Dan Shumow demonstrated that if the points are not randomly generated, but carefully chosen in advance, the security of Dual_EC DRBG can be subverted by the party doing the choosing; effectively backdooring the PRNG. Namely if one chooses P, Q such that Q=Pe holds for a value e that is kept secret, it will allow the party that generated said P, Q to recover the internal state of the PRNG from observed output in a computationally “cheap fashion” – hence instances of Dual_EC PRNG for which the provenance of the points P and Q is unknown are susceptible to having been backdoored.*
What assurance is there that the Q chosen by Juniper isn't subject to that type of backdoor vulernability? Why is Juniper using Dual_EC DRBG anyways? Aren't there other PRNG that are considered more robust?