Hello
We received a /30 WAN block and a secondary /29 WAN block from our ISP. We have it all setup and it works fine on our CCR router. We have the /30 IP setup on one port, and then have the /29’s first avail as a bridge interface IP. The /30’s gateway is setup as the main route out. Then the the rest of the /29 devices connected through the router, via bridge, and use the bridges interface IP as their gateway. We can connect out and into all the /29 WAN IPs fine.
However we have a weird issue. External devices are seeing the /30’s Interface IP as the source IP, instead of the /29’s WAN IP. This then causes some issue when /29 apps need info/connection back from external devices. Instead of getting all the way through to the /29, they are only getting to the /30. We then have to setup a NAT rule to forward to /29’s IP.
I hope i explained this good enough for someone to help. I’m guessing its a simple Nat or mangle rule we are missing.
Thanks