[PATCH] udhcp: infinite retries

Paul Fox pgf at brightstareng.com
Tue Feb 6 14:17:44 UTC 2007


 > >>> It may be useful (at least it is for us) to keep on sending DHCP request 
 > >>> and renewals for ever until we actually get an answer. For that purpose 
 > >>> udhcpc -t 0 could do the job.
 > >> I guess udhcpc -t 999999999 will be the same in practice.
 > > 
 > > Almost, but not exactly.
 > > We have machines that can be powered up without being connected to any 
 > > network for weeks. However, we need them to fetch an IP if they ever get 
 > > plugged to some network.
 > 
 > Then maybe you want to use something like netplugd ot ifplugd ...

of course that takes care of the locally connected problem, but
not the "connected to a switch which is itself disconnected"
problem.  but i agree -- if it were me, i'd probably use a
combination of the mechanisms.

dhcp should be using netlink itself, to track interface connectivity.  (i.e.,
needing ifplugd is a bug, in my opinion.)

paul
=---------------------
 paul fox, pgf at brightstareng.com



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