Larvitz :fedora: :redhat:<p>After a while of fiddling, I got dual-stack for FreeBSD (IPv4 and IPv6) VNet Jails working properly and reliably 🙂 </p><p>The important lessons, I've learned:</p><p>/etc/sysctl.conf:<br>+net.link.bridge.inherit_mac=1</p><p>/boot/loader.conf:<br>+if_epair_load="YES"</p><p>/etc/rc.conf:<br>+create_args_bridge0="inet6 auto_linklocal -ifdisabled addm vtnet0"<br>+ifconfig_vtnet0="up -tso -vlanhwtso"<br>+rtsold_enable="YES"<br>+rtsold_flags="-i -m bridge0"</p><p>Then, configuring ifconfig_bridge0_ipv6 as well as ipv6_defaultrouter for the host to have IPv6 connectivity as well as the network-configuration in the jail via $jail/etc/rc.conf (The jail of course needs it's own IP on the same subnet as the host)</p><p>Screenshots of the fully working configuration with a connectivity test are attached :-) </p><p><a href="https://burningboard.net/tags/freebsd" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>freebsd</span></a> <a href="https://burningboard.net/tags/jails" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>jails</span></a> <a href="https://burningboard.net/tags/vnet" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>vnet</span></a> <a href="https://burningboard.net/tags/ipv6" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>ipv6</span></a> <a href="https://burningboard.net/tags/container" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>container</span></a> <a href="https://burningboard.net/tags/networking" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>networking</span></a></p>