Re: [Openvpn-users] route single address through vpn

[Max W. <dav...@fa...>]

Max Waterman wrote:
>> route network mask
>> route 192.168.1.0 255.255.255.0
>>   
> So, that is identical to what I was trying, but which was failing. Of 
> course, now I try it, it works fine.
>
> "What was I doing wrong before?", I wonder, banging my head against a 
> wall. Curious....
Having looked at this a bit, I think I was just using a regular IP 
address, thinking it would ignore the bits that are masked off.

For example, I was using :

route 212.58.240.142 255.255.255.0

which doesn't work; but :

route 212.58.240.0 255.255.255.0

does work.

..and this is fine because 'whois 212.58.240.0' says :

inetnum:      212.58.240.0 - 212.58.240.255

However, when I tried that with 66.218.64.0 it worked, but 'whois 
66.218.64.0' says :

NetRange:   66.218.64.0 - 66.218.95.255
CIDR:       66.218.64.0/19

So, the netmask of 255.255.255.0 isn't good enough, and it should be 
255.255.224.0 (19 bits from the left) The network address is thus as 
specified in the CIDR line.

Is there a trick to converting /19 into hex/dec?

It'd be nice if OpenVPN would a) allow use of /19 style netmasks, and b) 
mask off the irrelevant bits in the specified network (though I suspect 
this is due to the underlying route command).

Oh well. All solved now :)

Thanks all.

Max.