![]() On a different machine running 10.14 I just installed macOS Mojave Security Update 2021-004 () and I am seeing problems. I just installed macOS Catalina Security Update 2021-003 () on a machine and haven't noticed any issues yet. With all of that said, I'm guessing this is a low level bug in the Kerberos framework that is likely only fixable by Apple developers. I'm curious if anyone else knows how to do this. What I don't know how to do (and I've searched a lot) is to issue a klist command in the context of the machine account (computer$) to verify the UUID. That tells me that there are some changes under the hood. In previous versions (10.15.7 in this case) it is klist: krb5_cc_get_principal: No credentials cache file found a local admin) the result will be klist: Cache not found: API:A9A8AC16-B767-4BCA-B221-65808815F939 One thing I've noticed in macOS 11 that's different from previous versions is that if you issue a klist command to view Kerberos credentials for an account that is not authenticated to AD (i.e. In macOS Kerberos, each principal is assigned a random UUID. ![]() opendirectoryd: (ActiveDirectory) DDNS update - failure - 'fd86:4116:5fec:0:8eda:3c3e:f602:32ad' - exit status - tkey query failed: GSSAPI error: Major = Miscellaneous failure (see text), Minor = no credential for CD0E79F1-55A7-4679-9411-72E820421C1A. I'm gathering the the UUID referenced is for the computer principal that doesn't exist. Here's log entry showing a failed DDNS update attempt. I'm not certain if it's getting created and deleted or not getting created at all. In macOS 11 the Kerberos computer principal appears to be missing. If you look at the owner of macOS generated DNS records in Windows DNS manager you'll see that the owner is computer$. A TGT is issued to this principal which is then used to update DNS securely in AD. As a result a Kerberos principal for will be created and stored in a credential cache. If the computer is named imac for example then it will authenticate to AD as imac$. In addition to users authenticating to AD when logging in, the computer itself authenticates during startup. It's the computer principal that is in play here I believe. Kerberos principals exist for users, computers and services. My testing is with Active Directory joined macOS computers using secured DNS, which I'm assuming is the set up of the OP. I don't know enough about Kerberos (especially the macOS specific implementation) to give a definitive answer, but it does seem that Kerberos functionality changed in macOS 11, which most likely has broken something. Rip=$(echo $ipaddr | sed 's/(*).(*).(*).(*)/4.3.2.1/g')ĭnsdelete="update delete $ PTR"ĭnsupdate="update add $ 86400 PTR $."Īs far as I tested, the problem remains with 11.3 update - Please listen to us. #echo "update add $ 86400 A $ipaddr"ĭnsupdate="update add $ 86400 A $ipaddr" Vdomain= cat /var/run/nf | awk '/search/ '`ĭnsdelete="update delete $ A" ![]() Here it goes: !/zsh/sh 1st get the domain you are on
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