Same for avahi with the compat use flag set.
Can confirm this. Updating mDNSResponder-107.6 required me to rebuild ntp because of a depencency on libdns_sd.so.1.
Well, that was why I noticed it, too, but mDNSResponder-107.6 is broken. Sync in a few hours and use -r2.
added support for USE=mdnsresponder to the tree