turning on comcast v6
jfbeam at gmail.com
Sat Jan 4 06:06:56 UTC 2014
On Fri, 03 Jan 2014 20:52:25 -0500, Owen DeLong <owen at delong.com> wrote:
> Not entirely true, actually… If you’re willing to work hard enough at
> it, most hosts can be “encouraged” to renew early.
Short of commandline access, no there isn't. (crashing or otherwise
triggering a reboot, isn't a "renew"; that's a full broadcast restart)
And RENEW isn't at issue as that's a unicast request directly with the
original DHCP server. Simply turning up your own instance will do nothing
there. (attempting to impersonate the real server isn't what were talking
For IPv6, you can become a/the router for a segment with the origination
of a single packet. Instantly. That's something you can never do with
> Well… Sure, 15 years after DHCP attacks first started being a serious
> problem… I doubt it will take anywhere near 15 years for RA guard on by
> default to be the norm in switches, etc.
It'll **NEVER** be a default because it breaks too many clueless people's
networks. Just like, surprise, DHCP "guard" isn't on by default in any
gear I'm aware of.
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