Since updating to macOS 26.4 developerbeta 2 I've been getting full loss of dns resolution. I am not running a VPN or any network extensions that I am aware of. I'm not sure how to report this in the feedback utility as I cannot find an appropriate category for it. Happy to file it if someone can give an appropriate suggestion - the closest I could see was Wi-Fi but that wanted Wi-Fi logs for the issue, which I do not believe to be needed as this is not a Wi-Fi connectivity issue. Running dig example.com +short nslookup example.com ping example.com Gives the following output 104.18.27.120 104.18.26.120 Server: 10.0.1.1 Address: 10.0.1.1#53 \ Non-authoritative answer: Name: example.com Address: 104.18.26.120 Name: example.com Address: 104.18.27.120 \ ping: cannot resolve example.com: Unknown host This shows it's not an issue with my local network and that core networking is working, but something in the mDNSResponder/dns stack of macOS is failing. This causes all apps/browsers that do not implement their own DNS lookups to fail (Chrome still works). Sometimes the issue clears after running the following commands (for a period), sometimes it does not. A restart always resolves the issue temporarily. sudo killall -9 mDNSResponder sudo killall -9 mDNSResponderHelper sudo dscacheutil -flushcache sudo ifconfig en0 down sudo ifconfig en0 up

I've already created feedback id FB9647811 about this, but as there has been no response to that I was wondering if anyone else had experienced the same or found a fix. My extension was working until Monterey beta 7 but now it crashes with the following message: [MEDecodedMessage initWithData:securityInformation:]: unrecognized selector sent to instance According to the documentation this is the correct constructor.

I have a multipart message and in the MEMessageSecurityHandler.decodedMessage(forMessageData:) function call, I can access all of the headers of the email, but when I get to the body section, the actual content of the email is missing. I've dumped the data out to a file and can see that there is an X-Apple-Content-Length header been added, but the content of the multipart email --=-=W2HxPVXDSaWZZw=-= X-Apple-Content-Length: 11 Content-Type: application/pgp-encrypted --=-=W2HxPVXDSaWZZw=-= Content-Transfer-Encoding: 7Bit Content-Disposition: inline; filename=openpgp-encrypted-message.asc Content-Type: application/octet-stream; name="openpgp-encrypted-message.asc" X-Apple-Content-Length: 9608 --=-=W2HxPVXDSaWZZw=-=-- How can I access the content of these parts to decrypt the message?