Comment # 22 on bug 1188949 from Jonathan Kang

(In reply to Vladislav Milenin from comment #21)
> (In reply to Reinhard Max from comment #20)
> > (In reply to Jonathan Kang from comment #19)
> > 
> > > I guess you're the maintainer of dhclient.
> > 
> > yes, I am the maintainer of the dhcp package, but not a deep expert in DHCP.
> > 
> > > Do you have any idea about what could go wrong here?
> > 
> > I discussed this with Marius, but we couldn't find a possible reason within
> > dhclient that would explain this. To narrow this further down we want to see
> > if the missing DHCPACK packages are not being sent by the router, being
> > filtered by the kernel, or being silently ignored by dhclient, because it
> > thinks they are invalid.
> > 
> > For that, please disable your firewall (if it is active) and change some
> > settings:
> > 
> > # sysctl -w net.ipv4.conf.all.log_martians=1
> > # sysctl -w sysctl -w net.ipv4.conf.all.rp_filter=0
> > 
> > Then record all DHCP packages over at least one occurance of dhclient
> > sending a request and seemingly getting no ack:
> > 
> > # tcpdump -W /tmp/dhcp4.pcapng -s 65535 -Uvnfi any 'port 67 or port 68'
> > 
> > Interrupt tcpdump with Ctrl-C when done and upload /tmp/dhcp4.pcapng as an
> > attachment.
> 
> I have a few questions. I need to use NetworkManager from the openSUSE
> repositories or from the home repository:Jonathan
> Kang:branches:GNOME:Factory.

Either is okay. 

> If it is from the openSUSE repositories, is it
> in working condition or when the Internet stops connecting?

This hasn't be fixed. So it's not in proper working condition. We want a bit
more information from your system for further debug this issue.

Thanks.