Take the 2-minute tour ×  I've done a search here and wasn't
able to find anything relevant to my situation. I apologize in
advance if I've missed an existing post on the topic.  Our ISP
has provided us with 6 static IP addresses. We are currently
using two of them (plus one for the Comcast-provided router).
One of the static addresses routes to our internal network, and
the other goes to our VOIP phone system. Unfortunately, the
Comcast machine doesn't support QoS, so our VOIP calls have been
choppy.  We plan to put the Comcast-provided router into bridge
mode and replace it with an ASUS RT-N16 running DD-WRT. However,
I'm unsure how to set up DD-WRT to function similarly to our
existing Comcast router. The Comcast router's WAN IP is the
first of our static IP addresses. We did not need to provide an
internal LAN IP address — simply connecting machines that use
our other public addresses to the LAN ports on the Comcast
router is enough for it to route between the connected machines
and our internet connectio