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Ran 15 Dec 2016 11:39PM UTC

Files 34

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Committed 15 Dec 2016 11:38PM UTC coverage: 97.611% (+0.01%) from 97.6%

Job # 78.1

Build Type

Pull #14

travis-ci

Committed by

web-flow

Commit Message

Handle IPv4-embedded IPv6 addresses with leading zeros

If the IPv6 address to be parsed ends with an IPv4 address in dot notation, the IPv4 portion will be represented by two parts in hexadecimal notation. If the first part is 0 (because the  IPv4 address in dot notation starts with "0.0."), it would fail to (correctly) parse the overall address, when the IPv6 prefix is not all zeros.
One practical use case of the dot notation is IPv4-embedded IPv6 addresses.  Without this change "::ffff:0.0.0.0" failed to parse, because it was rewritten to "::ffff:" and e.g. "::ffff:0.0.0.1" was rewritten to "::ffff:1", when it should have been "::ffff:0:1".

Leading zeros in the dot notation IPv4 part are now explicitly forbidden, because some systems interpret this as octal numbers. RFC 3986 defines "IPv4address" within an IPv6 address without leading zeros, so this decision has formal backing.

Pull Request Pull Request #14: Handle IPv4-embedded IPv6 addresses with leading zeros

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613 of 628 relevant lines covered (97.61%)

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master: 98%

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