Webconfigurator fails start when bound to interface with DHCPv6

[uglymotha]

When binding the webconfigurator to an interface using DHCPv6 it fails to start on boot.
This is because the rc.restart_webgui script runs before the interface is fully configured.

changed the startup of the configurator in /usr/local/etc/inc/plugins.in.d/webgui.inc:
mwexec('/sbin/ifconfig vtnet0 >/tmp/vtnet0; /usr/local/bin/flock -ne /var/run/lighty-webConfigurator.pid /usr/local/sbin/lighttpd -f /var/etc/lighty-webConfigurator.conf >>/tmp/vtnet0 2>&1; /bin/sleep 5; /sbin/ifconfig v
tnet0 >> /tmp/vtnet0; /usr/local/bin/flock -ne /var/run/lighty-webConfigurator.pid /usr/local/sbin/lighttpd -f /var/etc/lighty-webConfigurator.conf >>/tmp/vtnet0 2>&1'

And found:
vtnet0: flags=8863<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500
        description: LAN (lan)
        options=800a8<VLAN_MTU,JUMBO_MTU,VLAN_HWCSUM,LINKSTATE>
        ether 52:54:01:23:4a:58
        inet 10.0.29.50 netmask 0xffffff00 broadcast 10.0.29.255
        inet6 fe80::5054:1ff:fe23:4a58%vtnet0 prefixlen 64 tentative scopeid 0x1
        media: Ethernet autoselect (10Gbase-T <full-duplex>)
        status: active
        nd6 options=23<PERFORMNUD,ACCEPT_RTADV,AUTO_LINKLOCAL>

2024-02-04 11:32:23: (/usr/obj/usr/ports/www/lighttpd/work/lighttpd-1.4.73/src/network.c.588) bind() [fe80::5054:1ff:fe23:4a58]:443: Can't assign requested address

vtnet0: flags=8863<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500
        description: LAN (lan)
        options=800a8<VLAN_MTU,JUMBO_MTU,VLAN_HWCSUM,LINKSTATE>
        ether 52:54:01:23:4a:58
        inet 10.0.29.50 netmask 0xffffff00 broadcast 10.0.29.255
        inet6 fe80::5054:1ff:fe23:4a58%vtnet0 prefixlen 64 scopeid 0x1
        inet6 2a02:a452:42e8:f00f:5054:1ff:fe23:4a58 prefixlen 64 autoconf
        media: Ethernet autoselect (10Gbase-T <full-duplex>)
        status: active
        nd6 options=23<PERFORMNUD,ACCEPT_RTADV,AUTO_LINKLOCAL>

Current workaround is to have the webgui startup sleep for a few seconds

[Gipetto]

Just wanted to +1 this. After upgrading my web ui fails to start up at boot time.

<11>1 2024-02-17T10:37:23-08:00 OPNsense.wookiee.internal opnsense 276 - [meta sequenceId="228"] /usr/local/etc/rc.bootup: The command '/usr/local/bin/flock -ne /var/run/lighty-webConfigurator.pid /usr/local/sbin/lighttpd -f /var/etc/lighty-webConfigurator.conf' returned exit code '255', the output was '2024-02-17 10:37:23: (/usr/obj/usr/ports/www/lighttpd/work/lighttpd-1.4.73/src/network.c.588) bind() [fe80::e63a:6eff:fe5c:ad42]:443: Can't assign requested address'

It can be manually started by running:

sudo /usr/local/etc/rc.restart_webgui