Hi Samuel, > > > I have been running this patch on my meego netbook and it has been very > > > useful. Now I get the same IP address back almost always which makes it > > > easy to ssh to the device and I do not have to constantly check my IP > > > address in netbook (of course this is perhaps a useful use case for me > > > only). The DHCP REQUESTED IP address option is just a hint to the server > > > anyway. > > > > while this might be nice an useful, it is not something that I am > > shooting for actually. You would have Zeroconf/Avahi for finding the IP > > address of your SSH server. > > > > If we leave one network, then I do not expect to get back with the same > > address. > Jukka's patch saves the last DHCP address per service, so when you switch > between services you will not send your previous service DHCP address to a > different network.
that part is clear to me. Don't worry. > > Especially since we are not even taken the lease time into > > account, I consider this a security issue. > When leaving a network, we usually send a DHCP release in which case the > lease time becomes irrelevant. We are still keeping the stored value and try to use it the next time we re-connect to that service. Not a good idea. > > We are sending our previous > > IP in clear text over a WiFi network. Not really a good idea from my > > point of view. > Why would it be in clear text ? Think about public hotspots etc. > > > > When you leave the current network to switch to a different one or when > > > > you shutdown your laptop, why bother with trying to keep the same > > > > address. I rather not actually. > > > > > > Hmm, I would rather do actually :) > > > > > > There is some more discussion here > > > https://bugs.meego.com/show_bug.cgi?id=21068 > > > > Switching between networks can not be solved this way anyway. If the > > network is different, we must assume a new IP. > As I said, when switching between services, Jukka's patch will not send the > previous service last DHCP address. It will send the last one we got for that > specific service, as a hint. My point here is that once we stop roaming between the same SSID network, we should forget every IP address we ever had. Only if we hand over from one network to another network with the same SSID, we should send the IP as a hint. Once we talk to a different SSID or leave the current network, we should forget about the IP. Regards Marcel _______________________________________________ connman mailing list [email protected] http://lists.connman.net/listinfo/connman
