I'm having issues running OpenConnect on a router I flashed with
Asuswrt-Merlin. I have a USB drive connected with Entware-ng installed,
and was able to install OpenConnect and related packages.
The first time I run OpenConnect, I get some error about
/etc/resolv.conf. Overwriting this file with a non-read-only duplicate
seems to solve that.
Next, it seems to run okay, but I can tell I'm not actually connected to
the VPN because I still have the IP my ISP provided. I've tried adding
in some "missing" routes based off of what I see when I run OpenConnect
successfully on OSX, but then I can't connect to any sites at all.
I've tried a lot of different things, but I don't know how helpful it is
to list all of those out, and I'm not sure I can remember them all at
this point. The VPN does seem to work correctly while SSH'd into the
router itself if I run OpenConnect and add a route via the following:
route add -net 0.0.0.0 netmask 0.0.0.0 gw x.x.x.x dev tun0
Where x.x.x.x is the same ip in this output:
Connected as x.x.x.x, using SSL + lzs
I then confirm that I'm getting the IP from the VPN via:
wget http://checkip.dyndns.org/ | sed 's/[a-zA-Z<>/ :]//g'
The other thing I had thought of is that when I use L2TP or OpenVPN from
the router interface, the /etc/resolv/conf file doesn't change, whereas
OpenConnect removes the default nameserver adds a couple other
nameservers when it runs. I tried changing this back to the default
nameserver, but that didn't seem to help.
Any idea what's going wrong or thoughts on how I could troubleshoot this
further?
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