On Mon, Nov 10, 2014 at 04:54:08PM -0800, firstname.lastname@example.org wrote:
Still, odd that 0.0.0.0's so widely referenced; it's been in use as the initial IP 'address' for pre-vpn-up-state on dozens of machines here, in use with no issues for years ...
IMHO it's a relict of pre-1999 times when interface had one IPv4 address which had to be set to something so that setting it to 0.0.0.0 was the way to set "no address". Since kernel 2.2, interface has a list of addresses and this list can be empty. But some old habits die really hard.