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# See #A
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# = IPv4 Address Record (A)
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#
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# Defined in RFC 1035. Forward maps a host name to IPv4 address. The only
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# parameter is an IP address in dotted decimal format. The IP address in not
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# terminated with a '.' (dot). Valid host name format (a.k.a 'label' in DNS
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# jargon). If host name is BLANK (or space) then the last valid name (or label)
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# is substituted.
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#
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# Obtained from http://www.zytrax.com/books/dns/ch8/a.html
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#
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class A < Record
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validates :name, :hostname => {:allow_underscore => true, :allow_wildcard_hostname => true}
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validates :content, :presence => true, :ip => {:ip_type => :v4} # Only accept valid IPv4 addresses
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end
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