SMCD3G-CCR and Android devices

Short story:

I'd like to request that our SMC router is swapped with a different type (Cisco, Netgear...). Note that we have a static IP address, so we will need a comcast provided router that will support it. How do I initiate a replacement?

Long story:

Android devices do not work reliably on our network. The issue seems to be a buggy or incomplete IP6 implementation on either the SMCD3G router or the Android platform or both. The end result is that Android devices will often have a very slow or non-existent network connection. Disabling IP6 completely does not seem possible with the SMC router or Android phones. Rooting phones or installing a VPNs on the phone is not an option in our context.

References:

https://code.google.com/p/android/issues/detail?id=79576

http://forums.androidcentral.com/samsung-galaxy-s5/518099-strange-wi-fi-issues-since-lollipop.html