Nmap Development mailing list archives
Re: dhcp script!
From: Kris Katterjohn <katterjohn () gmail com>
Date: Tue, 08 Sep 2009 11:32:30 -0500
-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 On 09/08/2009 09:43 AM, Ron wrote:
My concern about DHCPREQUEST is side effects -- does it reserve that IP address?
Regardless of whether you use DHCPREQUEST by default or just as an option, couldn't you just specify the lease time (option 51) as 1s? Obviously it'd be better to not actually grab an IP address, but this seems reasonable if somebody wants to use this type (or needs to because others fail or something). Note that I'm just throwing this out there. All I've done is just glance at section 9.2 in RFC 2132. DHCP servers could very well not allow any low lease times (either by the protocol or configured not to). However maybe if a server defaults to a >=1 day lease time, and you specify 1s, it'll give you a lease of something much lower like a half-hour or so. I'm just speculating as I don't know much about DHCP other than just what it takes to have a functioning LAN (which isn't all that much). Anyway, I hope this was at least worth reading ;)
Ron
Cheers, Kris Katterjohn -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.10 (GNU/Linux) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org iQIcBAEBAgAGBQJKpocdAAoJEEQxgFs5kUfubgUP/jxSxKdWhzzv27DHS2c40d1K 0kJFjGC9azk4pYugmpEzho++0QW70ica64gbeZN8jM2a6DhbuqpundtKbMdA6kOC 9Mms9iok0nO9jTiDNymysRjlEHxr0DAURxrpPR/jiQhWghWSuXxpEZBsfX11cgYN Ee8sp+SBX1AzfxNgF+8sHlWp55g0yaEg2Qc8X+GHuGkyxhA/rpztJDCjhACjps5j xp68gTaxNizqTx09zVKRov0XYOi1zfhGExjxBuGVwxNUqUq3di8x7pR4DeSAf3Pd dN7q6CrwLg+HgkcIsA5XQh9vSAFKeOWFsUYTjMKzM4a6IKscgCUfj0VAfkdVJVJC vOOVr2frNQToKyr4VflYLHl5fPmEYOkg/Vr3VNbcdKNNwN+7xpWlouBrBLtS+TVZ n89dK36VifdmzaL47fiImam+E2lMuABHulTu8UmSPCCoTpTySjw0tgD/gEK/n7at DwXaGK3tkUCvjx+kwZRcg6JysnYbQfzYTBAVaaY1LIO68s/BKao7GrrqKZTVGV3h FqsZU2n5eg2/sxWUGgMCOAN+LjtrnI1oZVMCY8i25qdEHQKDJBiZx2Ll/BA/zxoj uza5joTpbxsWlTdEg7YjQaF+FCWCAjuYRSdCGa19myr+TegDu1CB9PMkwK3CMmyZ yM7qCzQ2mj0GydFyhURp =8ht8 -----END PGP SIGNATURE----- _______________________________________________ Sent through the nmap-dev mailing list http://cgi.insecure.org/mailman/listinfo/nmap-dev Archived at http://SecLists.Org
Current thread:
- Re: dhcp script!, (continued)
- Re: dhcp script! Ron (Sep 08)
- Re: dhcp script! David Fifield (Sep 08)
- Re: dhcp script! Michael Pattrick (Sep 08)
- Re: dhcp script! Ron (Sep 08)
- Re: dhcp script! Walt Scrivens (Sep 08)
- Re: dhcp script! Ron (Sep 08)
- Re: dhcp script! Ron (Sep 08)
- Re: dhcp script! Brandon Enright (Sep 08)
- Re: dhcp script! Ron (Sep 08)
- Re: dhcp script! Kris Katterjohn (Sep 08)
- Re: dhcp script! Ron (Sep 08)
- Re: dhcp script! Ron (Sep 08)
- Re: dhcp script! Walt Scrivens (Sep 08)
- Re: dhcp script! David Fifield (Sep 08)
- Re: dhcp script! Walt Scrivens (Sep 08)
- Re: dhcp script! Ron (Sep 08)
- Re: dhcp script! Walt Scrivens (Sep 08)
- Re: dhcp script! Ron (Sep 08)