nanog mailing list archives
Re: enterprise 802.11
From: Jared Mauch <jared () puck nether net>
Date: Mon, 16 Jan 2012 12:05:17 -0500
On Jan 16, 2012, at 11:52 AM, Tim Franklin wrote:
As for the iOS problem, read on here: http://www.net.princeton.edu/apple-ios/ios41-allows-lease-to-expire-keeps-using-IP-address.htmlThat's the iOS issue - out of curiosity, what's the Mac issue?
That's a poorly maintained device issue. The good news is the DHCP requests for those devices (if you log them) commonly include information about the device owner, e.g.: Jan 15 16:56:35 nat dhcpd[1046]: DHCPACK on 10.0.0.168 to 18:e7:f4:5c:b1:d7 (MATTS-IPOD-3) via eth0 or client-hostname "iPhone-Touch"; client-hostname "Her-iPod"; client-hostname "iPad"; client-hostname "Amys-iPod"; Also, citing a single software release with a defect can be done for any platform. http://support.microsoft.com/kb/928233 These issues are commonly solved by upgrading to the most recent release of software. Reading the princeton article says setting your lease time to 3600 seconds seems to workaround the problem from the network side. I'm personally not convinced of the value of very short lease times (less than an hour). Even IPv6 privacy addresses stay around longer than that. MacOS Kernel (11.2.0) net.inet6.ip6.temppltime: 86400 net.inet6.ip6.tempvltime: 604800 Linux Kernel (3.1.1) net.ipv6.conf.default.use_tempaddr = 0 net.ipv6.conf.default.temp_valid_lft = 604800 net.ipv6.conf.default.temp_prefered_lft = 86400 FreeBSD 9.0-RELEASE (GENERIC) net.inet6.ip6.use_tempaddr: 0 net.inet6.ip6.temppltime: 86400 net.inet6.ip6.tempvltime: 604800 - Jared
Current thread:
- Re: enterprise 802.11, (continued)
- Re: enterprise 802.11 Eugeniu Patrascu (Jan 15)
- Re: enterprise 802.11 Brent Jones (Jan 16)
- Re: enterprise 802.11 Joel jaeggli (Jan 16)
- Re: enterprise 802.11 Jon Sevier (Jan 16)
- Re: enterprise 802.11 Valdis . Kletnieks (Jan 16)
- SV: enterprise 802.11 Andreas Larsen (Jan 16)
- RE: enterprise 802.11 Martin Hotze (Jan 16)
- Re: enterprise 802.11 Anurag Bhatia (Jan 16)
- RE: enterprise 802.11 Martin Hotze (Jan 16)
- Re: enterprise 802.11 Tim Franklin (Jan 16)
- Re: enterprise 802.11 Jared Mauch (Jan 16)
- Re: enterprise 802.11 Jay Ashworth (Jan 16)
- Re: enterprise 802.11 Robert E. Seastrom (Jan 18)
- Re: enterprise 802.11 Anurag Bhatia (Jan 16)