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115411772b
* sysdeps/posix/getaddrinfo.c (default_scopes): Map RFC 1918
* addresses
to global scope.
* posix/tst-rfc3484.c: Verify 10/8, 172.16/12 and 196.128/16
addresses are in the same scope as 192.0.2/24.
* posix/gai.conf: Document new scope table defaults.
66 lines
2.5 KiB
Plaintext
66 lines
2.5 KiB
Plaintext
# Configuration for getaddrinfo(3).
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#
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# So far only configuration for the destination address sorting is needed.
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# RFC 3484 governs the sorting. But the RFC also says that system
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# administrators should be able to overwrite the defaults. This can be
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# achieved here.
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#
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# All lines have an initial identifier specifying the option followed by
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# up to two values. Information specified in this file replaces the
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# default information. Complete absence of data of one kind causes the
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# appropriate default information to be used. The supported commands include:
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#
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# reload <yes|no>
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# If set to yes, each getaddrinfo(3) call will check whether this file
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# changed and if necessary reload. This option should not really be
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# used. There are possible runtime problems. The default is no.
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#
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# label <mask> <value>
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# Add another rule to the RFC 3484 label table. See section 2.1 in
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# RFC 3484. The default is:
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#
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#label ::1/128 0
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#label ::/0 1
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#label 2002::/16 2
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#label ::/96 3
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#label ::ffff:0:0/96 4
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#label fec0::/10 5
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#label fc00::/7 6
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#label 2001:0::/32 7
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#
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# This default differs from the tables given in RFC 3484 by handling
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# (now obsolete) site-local IPv6 addresses and Unique Local Addresses.
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# The reason for this difference is that these addresses are never
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# NATed while IPv4 site-local addresses most probably are. Given
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# the precedence of IPv6 over IPv4 (see below) on machines having only
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# site-local IPv4 and IPv6 addresses a lookup for a global address would
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# see the IPv6 be preferred. The result is a long delay because the
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# site-local IPv6 addresses cannot be used while the IPv4 address is
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# (at least for the foreseeable future) NATed. We also treat Teredo
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# tunnels special.
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#
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# precedence <mask> <value>
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# Add another rule to the RFC 3484 precedence table. See section 2.1
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# and 10.3 in RFC 3484. The default is:
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#
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#precedence ::1/128 50
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#precedence ::/0 40
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#precedence 2002::/16 30
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#precedence ::/96 20
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#precedence ::ffff:0:0/96 10
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#
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# For sites which prefer IPv4 connections change the last line to
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#
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#precedence ::ffff:0:0/96 100
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#
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# scopev4 <mask> <value>
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# Add another rule to the RFC 6724 scope table for IPv4 addresses.
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# By default the scope IDs described in section 3.2 in RFC 6724 are
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# used. Changing these defaults should hardly ever be necessary.
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# The defaults are equivalent to:
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#
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#scopev4 ::ffff:169.254.0.0/112 2
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#scopev4 ::ffff:127.0.0.0/104 2
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#scopev4 ::ffff:0.0.0.0/96 14
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