Erin 💽@technomancy @cwebber Honestly I'm probably in a lucky position to have been able to do this, but my solution was just to move the IRC channel to a network which runs the Matrix bridge themselves (specifically, Hackint)
GNU social JP is a social network, courtesy of GNU social JP管理人. It runs on GNU social, version 2.0.2-dev, available under the GNU Affero General Public License.
All GNU social JP content and data are available under the Creative Commons Attribution 3.0 license.