Hi,
  The 'EXAMPLES' section in gai.conf(5) has a table that matches
RFC 3484; however that's not what glibc's default label table is;
it's table has three extra entries:

https://sourceware.org/git/?p=glibc.git;a=blob;f=nss/getaddrinfo.c;h=c0f496f96c752220e68bf0257d9ff1ffc624ebe6;hb=HEAD#l1341

and partially in the more readable:
https://sourceware.org/git/?p=glibc.git;a=blob;f=posix/gai.conf;h=4616ed005b2e064175c88609b6d6022a6da4d5d8;hb=HEAD#l31

I wonder if it makes sense to document glibc's default rather than the
RFC default?

Dave
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