I'm seeing an MTU issue after upgrading from 1.2.3 to 2.0. I 'fixed' this by editing
/var/etc/pptp-vpn/mpd.conf
and adding:
set link mtu 1396
Then, killing the mpd process and restarting it:
/usr/local/sbin/mpd4 -b -d /var/etc/pptp-vpn -p /var/run/pptp-vpn.pid -s pptps pptps
That's not a pfSense 'solution' but perhaps others here could try it to see if our problems are the same?
This wasn't necessary before, so I'm wondering if defaults are different, path MTU discovery is somehow broken, etc. BTW, I read that XP's pptp client requires 1396, so that's what I set for a compatibility floor.