10:37 p.m.
Hi Daniel & Patrik,
Thanks for the responses.
Checked with connman incrementally from v1.30 to v1.33, found out the delay
behaviour almost similar on my setup.
Also ensured systemd-networkd is not running on my setup.
Further observed with less available entropy.. on the setup causing the
delay. So continuing with v1.33.
e.g.
*:~# cat
/proc/sys/kernel/random/entropy_avail
0*
Getting connman waiting/stuck at
*getrandom (_rnd_get_system_entropy_getrandom) (by default gnutls enabled)*
So tried to increase entropy with help of /dev/urandom & and with
sufficient ~3k+ entropy count observed the getrandom call completed
successfully.
Is this know behaviour Or experienced by anyone.. ?
:~# rngd -r /dev/urandom -o
/dev/random
:~# cat /proc/sys/kernel/random/entropy_avail
3087
Please advise, we suppose to use only /dev/random for better security
reasons and not /dev/urandom ? thoughts if any for other ways to deal with
less/no entropy available with /dev/random?
http://security.stackexchange.com/questions/122155/how-bad-it-is-to-feed-...
http://stackoverflow.com/questions/3690273/did-i-understand-dev-urandom#c...
Any pointers or references will be a great help..
Thanks
Shrikant
On Wed, Dec 7, 2016 at 7:27 PM, Patrik Flykt <Patrik.Flykt(a)linux.intel.com>
wrote:
On Fri, 2016-11-25 at 15:38 +0530, Shrikant Bobade wrote:
> Hi,
>
> I am using connman v1.33 along with systemd v230 for yocto based
> project.
> Experiencing delay in IP assignment ranging from 20 sec. to 1.5 min.
>
> While used earlier versions previously didn't faced such delays. So
> by the time I am finding the exact change in version causing this
> delay issue. Just want to check anyone experiencing such delays in IP
> assignments.
>
> Any suggestions or pointers will be a great help.
Ensure that you don't have systemd-networkd running, at least not on
the interfaces used by ConnMan?
Cheers,
Patrik