taglinefilesource code
IFF_UP737drivers/net/de600.cdev->flags &= ~IFF_UP;
IFF_UP764drivers/net/de620.cdev->flags &= ~IFF_UP;
IFF_UP929drivers/net/plip.cif(dev->flags&IFF_UP)
IFF_UP466drivers/net/ppp.cppp->dev->flags &= ~IFF_UP; /* down the device */
IFF_UP652drivers/net/ppp.cif (((struct ppp *) ppp)->dev->flags & IFF_UP)
IFF_UP1031drivers/net/ppp.cif ((ppp->dev->flags & IFF_UP) && ppp_do_ip(ppp, proto, c, count)) {
IFF_UP1703drivers/net/ppp.cif (!(dev->flags & IFF_UP)) {
IFF_UP1919drivers/net/ppp.cif (ppp->dev->flags & IFF_UP)
IFF_UP1932drivers/net/ppp.cif (ppp->dev->flags & IFF_UP)
IFF_UP599drivers/net/slip.cdev->flags|=IFF_UP;
IFF_UP265net/inet/dev.cdev->flags |= (IFF_UP | IFF_RUNNING);
IFF_UP355net/inet/dev.c(dev->slave->flags & IFF_UP))
IFF_UP887net/inet/dev.cif(!(dev->flags & IFF_UP))  /* Downed devices don't count */
IFF_UP1058net/inet/dev.cIFF_UP | IFF_BROADCAST | IFF_DEBUG | IFF_LOOPBACK |
IFF_UP1086net/inet/dev.cif ((old_flags & IFF_UP) && ((dev->flags & IFF_UP) == 0)) 
IFF_UP1096net/inet/dev.cret = (! (old_flags & IFF_UP) && (dev->flags & IFF_UP))
IFF_UP1102net/inet/dev.cdev->flags&=~IFF_UP;  /* Didnt open so down the if */
IFF_UP1304net/inet/dev.cif((slave->flags&(IFF_UP|IFF_RUNNING))!=(IFF_UP|IFF_RUNNING))
IFF_UP143net/inet/devinet.cif (!(dev->flags & IFF_UP))
IFF_UP227net/inet/devinet.cif (!(dev->flags & IFF_UP))
IFF_UP237net/inet/devinet.cif (!(dev->flags & IFF_UP))
IFF_UP1359net/inet/ip.cif (dev2->flags & IFF_UP) 
IFF_UP1766net/inet/ip.cif (dev->flags & IFF_UP) 
IFF_UP1844net/inet/ip.cif (dev->flags & IFF_UP) 
IFF_UP194net/inet/packet.cif (dev->flags & IFF_UP) 
IFF_UP408net/inet/route.cif ((dev2->flags & IFF_UP) && dev2->pa_addr == gw)