Due to circumstances, all Xen subprojects have now moved their IRC channels off of Freenode.
The following channels have been moved to OFTC: #xendevel, #xen, #xeninfra #xcp-ng, #xcp-ng-dev. #mirage has moved to Libera Chat.
Up-to-date IRC channel information can be found on the xenproject.org IRC reference page.
The #unikraft channel hasn’t really been used, and so has been removed from the IRC reference page.
