Confused about network route added by NM 0.7.0 for PPTP VPN

I have a PPTP VPN connection defined in NM applet 0.7.0 with a Address
added to the IPv4 Settings page as Address= Prefix=16
Gateway=  After the establishing the PPTP connection
successfully, I have the following in my route table:

[root localhost ~]# route -n
Kernel IP routing table
Destination     Gateway         Genmask         Flags Metric Ref    Use
Iface UGH   0      0        0
eth1   U     0      0        0
eth1     U     0      0        0
ppp0         UG    0      0        0

At this point, I couldn't establish any connectivity to anything in

On a hunch I ran the following route command manually.  After running it
I was able to then connect to 10.255.x.x addresses.

	route add -net netmask dev ppp0

Oddly, after adding the net route manually, my route table had two of
the following entries which appear to be exactly the same, but obviously
they aren't:     U     0      0        0
ppp0     U     0      0        0

My question is, what is NM adding and why is it different than running
the route add -net command manually?  I don't know enough to dig deeper
into the routes being added to figure out what is different.  Perhaps
someone with more knowledge could tell me what to look at.

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