K 10 svn:author V 5 brian K 8 svn:date V 27 2001-04-03T01:22:15.000000Z K 7 svn:log V 240 Allow MOD_UNLOADs of if_tun, and handle event handler registration failures in MOD_LOAD. Dodge duplicate make_dev() calls by (ab)using dev->si_drv2 to remember if we created the device node via a dev_clone callback before the d_open call. END