Routing of APIPA ip addresses

[Andreas Wruhs]

Hi there

does somebody know how to enable routing of ip ranges in the 169.254.x.x
subnet over the default gw?
when we manually add a route via the cmd all is functional but it seems that
ms disabled the automatic routing of APIPA range over the default gw!

thnxs andi

 

[Robert Moir]

Hi there

does somebody know how to enable routing of ip ranges in the
169.254.x.x subnet over the default gw?
when we manually add a route via the cmd all is functional but it
seems that ms disabled the automatic routing of APIPA range over the
default gw!

Well I personally wouldn't use the APIPA range of addresses for anything
sophisticated enough to require routing, but when you manually add a route,
I assume you're doing this with the 'ROUTE ADD' command? You can add a -p at
the end of the command to make the route you've just defined persistent -
have you tried this and found it didn't work?

 

[Andreas Wruhs]

Well I personally wouldn't use the APIPA range of addresses for anything
sophisticated enough to require routing, but when you manually add a
route, I assume you're doing this with the 'ROUTE ADD' command? You can
add a -p at the end of the command to make the route you've just defined
persistent - have you tried this and found it didn't work?

as i said when adding a route permanent or not everything is working - but
i guess there is
a reg key where you can enable or disable this behavior!

Andi

 

[AJR]

IPs in the 169 (private addresses) set are automatically assigned by Windows
when DHCP not available. With 169 addresses, computers can only
communication within their network - they have no access outside of their
network (public IPs required - such as 192.*.*.*).

 

[Robert Moir]

as i said when adding a route permanent or not everything is working
- but i guess there is
a reg key where you can enable or disable this behavior!

Long story short, you're not "supposed" to route traffic to/from that
subnet, it's purely meant for very simple networks, so I'm not surprised you
have to work hard to get it to route traffic.

 

[Andreas Wruhs]

We know all of that - but du you know how to enable the routing or not? - In
2000, XP, 2003 it works!!

 

[Kerry Brown]

The fact that it used to work doesn't mean it always will. It was never
supposed to work and using the fact that it sometimes worked was a mistake.
You would be much better off to redesign the network properly so it doesn't
break again in the future.

"169.254.0.0/16 - This is the "link local" block. It is allocated for
communication between hosts on a single link. Hosts obtain these
addresses by auto-configuration, such as when a DHCP server may
not be found."

http://tools.ietf.org/html/rfc3330