On 02/02/18 21:42, Terry Barnaby wrote: > A strange one this. I was trying to change the default route of a machine for > testing a different gateway. > > I ran: > > route del default gw <gateway1> > > route add default gw <gateway2> > > However the second command did not add the route and I could not add the old > default route back. There were no errors on stdout or in /var/log/messages. > > Now I found that if there is already a default route you can add another one, so > could do a: > > route add default gw <gateway2> > > route del default gw <gateway2> > > And these worked fine. It seems you cannot set a default route if there isn't one set. > > Any ideas ? If you use the route command to add a route you must also specify the netmask. So, you'll need to use.... route add default netmask x.x.x.x gw <gateway> Look at the man page for route..... netmask NM when adding a network route, the netmask to be used. -- A motto of mine is: When in doubt, try it out
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