On Thu, 2012-04-19 at 17:24 -0600, Matt Larsen - Lists wrote:
> I have a customer radio that we can't get to because the installer 
> forgot to put in a default gateway.

This is, actually, a src-nat fix.  What we have to do is "trick" the
radio into thinking that the request is from a local IP.  

> It is a Ubiquiti bullet5 radio with an IP address of 192.168.32.3.
> 
> I have a Mikrotik 750 at the base with an IP of 192.168.32.1 

So what you'd need to do is add a src-nat rule on the 192.168.32.1
device as follows:
/ip firewall nat
add chain=src-nat dst-address=192.168.32.3 action=masquerade

This is the only rule you'd need to accomplish this.  Any traffic
destined for the 32.3 address would be src-natted (masquerade) to the
32.1 address.  Of course, once the gateway was added, you'd want to
remove that rule.

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