Comcast Business Static IP (/28) Issue & Sanity Check
Hello everyone :-) I am having an issue, and I am hoping someone can help me. We have Comcast Business as our ISP and we have a /28 static IP block from them.
Usable range: xx.xx.xx.209 - xx.xx.xx.221
Gateway: xx.xx.xx.222
Subnet Mask: 255.255.255.240
The issue is, if I go to Assignments->WAN, make the following changes:
IPv4 Configuration Type: Static IPv4
IPv6 Configuration Type: None
IPv4 Address: xx.xx.xx.209/28
Upstream Gateway: xx.xx.xx.222
This fails to work. I have to change the IPv4 address field to xx.xx.xx.210/28 in order for everything to work.
Unless I am missing something, isn't xx.xx.xx.209/28 supposed to work if I put it in the IPv4 Address field? That is the first usable IP that Comcast gave me and from what I understand, you configure pfSense to use the first usable IP that Comcast gives you. Then for the rest of the Static IPs, you create Virtual IPs (with IP Alias) type.
Is this not correct? Any help here would be appreciated!
P.S. Not sure if this has anything to do with it, but in the Virtual IP section, there is an entry for xx.xx.xx.209/32 (IP Alias) and xx.xx.xx.210/32 (Proxy ARP). I don't believe this has anything to do with it, but, I thought I would mention it just in case it does.