jail
Thomas Spreng
spreng at socket.ch
Thu May 15 02:00:18 PDT 2003
On Thu, May 15, 2003 at 09:43:10AM +0100, Matthew Seaman wrote:
> On Thu, May 15, 2003 at 09:10:46AM +0200, Thomas Spreng wrote:
> > hi,
> >
> > > 2) I am having trouble connecting jail to the internet.
> > > here is an output of my ifconfig
> > > harry at requiem:/home/harry# ifconfig rl0
> > > rl0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> mtu 1500
> > > inet 209.94.197.222 netmask 0xffffffe0 broadcast 209.94.197.223
> > > inet6 fe80::230:f1ff:fe44:9768%rl0 prefixlen 64 scopeid 0x1
> > > inet 192.168.1.223 netmask 0xffffff00 broadcast 192.168.1.255
> > > ether 00:30:f1:44:97:68
> > > media: Ethernet autoselect (10baseT/UTP)
> > > status: active
> >
> > afaik, inet aliases need a netmask of 0xffffffff.
>
> Usually you'ld be quite right in saying that, but unfortunately in
> this case I'm afraid it is not correct. The rule is that the second
> and subsequent addresses from any particular netblock get a netmask of
> 0xffffffff. In this case, where the alias address comes from a
> different netblock to the original address (so that the alias is the
> first address from that netblock) it gets the natural netmask as the
> original poster showed.
of course! you're right. sorry for the confusion :)
cheers
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