Re^6: Need help with (un)pack templates

an IP address is 4 8-bit numbers, not a 32-bit number

s/is/is normally represented as/;

$ host perlmonks.org
perlmonks.org has address 66.39.54.27
$ perl -le 'print ((66 * 256**3)+(39 * 256**2)+(54 * 256)+27);'
1109866011
$ perl -le 'print unpack('N',(gethostbyname("perlmonks.org"))[4]);'
1109866011
[download]

Many web browsers accept the decimal value of the IP address: http://1109866011/

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Re^7: Need help with (un)pack templates by gmargo (Hermit) on Dec 20, 2009 at 17:08 UTC
s/is normally represented as/is encoded in an IP header as/; # :-)	[reply]