Huh. I’ve recently had an issue with a captive portal on my Slate (AR-750S captive portal issues) and I wish I’d thought about this, it probably would have fixed my issue. I’ll be sure to try it the next time I have problems with a captive portal page.
@alzhao: DNS Rebind issue didn’t solve my issue. What MIGHT be a fix to try (and I’m willing to test) is where once you’ve detected a captive portal:
- use the original DNS server(s) from the WAN side to get the IP address of the captive portal page
- manually set an ephemeral (temporary, and goes away after a reboot or network-type change) entry in the hosts file mapping that IP address to the the captive-portal’s FQDN.