[pptp-server] Can't ping through PPTP connection

[Michael St. Laurent]

The connection is authenticated and established, I can see the pppd process
and ifconfig shows interface ppp0.  But the debug info contains the line
"Cannot determine ethernet address for proxy ARP" and I can't send any
traffic through the connection despite having added a route to it.  In fact
I can only ping the "inet addr" and not the "P-t-P" address.  Below is my
config file... can someone spot what I've got misconfigured please?

usehostname
noipdefault
nodefaultroute
debug
noauth
-pap
+chap
+chapms
+chapms-v2
mppe-40
mppe-128
mppe-stateless
crtscts
lock
modem
asyncmap 0
nodetach
proxyarp
lcp-echo-interval 30
lcp-echo-failure 4
idle 600
noipx


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Michael St. Laurent
Hartwell Corporation