The list_net_interfaces() function of /etc/network.subr uses the following code to build list of interfaces when network_interfaces is NOT set to "auto": _tmplist="${network_interfaces} ${cloned_interfaces}" This does not account gif interfaces specified with gif_interfaces option. Of course it is possible to set gif_interfaces equal to cloned_interfaces in the /etc/rc.conf but this will cause "ifconfig gifN create" to be executed twice (second invocation reports error - interface already created)
We've deprecated setting network_interfaces to anything other than AUTO in 7.0 and I'll probably MFC that documentation to RELENG_6 after the 6.1 release. Now that you can disable automatic, boot time configuration of individual interfaces with the NOAUTO keyword, setting network_interfaces is pretty pointless. As such it seems unlikely we'll fix this bug. In may ways, the real bug is appending cloned_interfaces automagically. -- Brooks
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Brooks suggested this was OBE in 7.0