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Approved by: markm
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It enables us to control link-local connections by interface like
this:
ALL : [fe80::%ed0]/10 : allow
ALL : [fe80::]/10 : deny
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Now libwrap depends on libc.so.4, so needs to update the major version.
Without this, old binaries which use libwrap and build with libc.so.3
will coredump on recent 4.0.
Approved by: jkh
Reviewed by: markm
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Now when tcp_wrapper is enabled by inetd -wW,
several accesses which should be permitted are refused only for IPv6,
if hostname is used to decide the host to be allowed.
IPv6 users will be just upset.
About security related concern.
-All extensions are wrapped by #ifdef INET6, so people can completely
disable the extension by recompile libwrap without INET6 option.
-Access via IPv6 is not enabled by default.
People need to enable IPv6 access by changing /etc/inetd.conf at first,
by adding tcp6 and/or tcp46 entries.
-The base of patches are from KAME package and are actually daily used
for more than a year in several Japanese IPv6 environments.
-Patches are reviewed by markm.
Approved by: jkh
Submitted by: Hajimu UMEMOTO <ume@mahoroba.org>
Reviewed by: markm
Obtained from: KAME project
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GNU configure goes very mad when sensing anything with -lwrap
since those two vars are missing
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