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ipv4 [0,255].[0,255].[0,255].[0,255]
ipv6 [0000,ffff]:[0000,ffff]:[0000,ffff]:[0000,ffff]:[0000,ffff]:[0000,ffff]:[0000,ffff]:[0000,ffff]
This excludes all the ipv4 ips that have a 0 in the 2nd, 3rd, and 4th octets. Sorry but we’re going to have to revoke your Network Engineering credentials.
thanks, fixed
Not to nitpick, but an IPv6 address is represented as eight groups of four hexadecimal digits separated by :. Like 2001:0db8:3333:4444:5555:6666:7777:8888.
I’ll leave the regex to validate an ipv6 address as an exercise to the reader.
Omg, that’s twice now I’ve messed it up. Fixed.
