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