You can also use Net::Netmask:
use Net::Netmask;
my $block = Net::Netmask->new2('192.168.1.33', '255.255.255.192') or die;
print $block->broadcast, "\n";
Hope this helps!
--John
On 6/5/05, Bob Rogers <[EMAIL PROTECTED]> wrote:
> From: J Finn <[EMAIL PROTECTED]>
> Date: Sun, 5 Jun 2005 20:26:42 -0400
>
> I've got a quick question I'm hoping someone can answer.
>
> If I've got a server with 3 interfaces on three different network, Is
> there a portable way in perl to get the broadcast addresses of each
> of those networks?
>
> for example, if I've got an ip address: 192.168.1.33 and the netmask
> is 255.255.255.192 (range .32-.63), how can I find the broadcast
> address (192.168.1.63)?
>
> Thanks
>
> -jf
>
> Depends on what you mean by 'portable.' I just pull the answer directly
> from the output of ifconfig. That is probably safest, as this may have
> something different from the value you would compute:
>
> eth1 Link encap:Ethernet HWaddr 00:90:27:BD:F2:6F
> inet addr:24.34.108.24 Bcast:255.255.255.255 Mask:255.255.248.0
> inet6 addr: fe80::290:27ff:febd:f26f/64 Scope:Link
> UP BROADCAST NOTRAILERS RUNNING MULTICAST MTU:1500 Metric:1
> RX packets:30307825 errors:0 dropped:0 overruns:0 frame:0
> TX packets:3937613 errors:0 dropped:0 overruns:0 carrier:0
> collisions:0 txqueuelen:100
> RX bytes:2770021884 (2641.6 Mb) TX bytes:1617715374 (1542.7 Mb)
> Interrupt:11 Base address:0xd000 Memory:eb100000-eb100038
>
> The 'Bcast:' value in this case was supplied by the Comcast DHCP server;
> I just now noticed this for the first time. I wouldn't be surprised to
> learn that it violates all kinds of RFCs, though. It could be that
> doing it that way makes it easier for them to block broadcasts from
> noisy Windows clients, but that's just a guess.
>
> -- Bob Rogers
> http://rgrjr.dyndns.org/
>
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>
--
John West [EMAIL PROTECTED]
-><- 'tis an ill wind that blows no minds -><-
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