–[ cable modem ] – [hub] – [ pfsense ] –-[ lan switch ]
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[ linksys ] /
get a hub or switch, plug your cable modem into it, along with pfsense WAN interface, and a linksys or other router.
this way pfsense would pull a DHCP address from the cable modem, and so would the soho router which would then NAT it to a static internal ip for pfsense to use via opt1
then policy route VOIP to opt1