Re:Bizarre and Unusual Uses of DNS
by skissane on Saturday February 25, 2023 @11:47PM
(#34943136)
Thanks for clarifying, that makes more sense. I was just going by what the person I was replying to was saying.
The man pages on my Linux box are too old to mention the trust-ad option, although newer Linux man pages do.
glibc defines a RES_TRUSTAD bit which is equivalent, so applications can choose to request and trust the AD bit even if resolv.conf isn't configured to do so. However, that doesn't appear to be documented anywhere other than the header file and the NEWS file in the glibc distribution. Both RES_TRUSTAD and trust-ad were added in glibc 2.31 (released Feb 2020).
The man pages on my Linux box are too old to mention the trust-ad option, although newer Linux man pages do.
glibc defines a RES_TRUSTAD bit which is equivalent, so applications can choose to request and trust the AD bit even if resolv.conf isn't configured to do so. However, that doesn't appear to be documented anywhere other than the header file and the NEWS file in the glibc distribution. Both RES_TRUSTAD and trust-ad were added in glibc 2.31 (released Feb 2020).