AskUbuntu<p>Use iptables to block certain macs in a bridge <a href="https://ubuntu.social/tags/networking" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>networking</span></a> <a href="https://ubuntu.social/tags/iptables" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>iptables</span></a> <a href="https://ubuntu.social/tags/networkbridge" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>networkbridge</span></a></p><p><a href="https://askubuntu.com/q/1549261/612" rel="nofollow noopener" translate="no" target="_blank"><span class="invisible">https://</span><span class="">askubuntu.com/q/1549261/612</span><span class="invisible"></span></a></p>