tech-net archive

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index][Old Index]

Re: Fwd: 10-BETA : some network issues



Michael van Elst a écrit :
> On Sun, Jan 01, 2023 at 04:25:37PM +0100, BERTRAND Joël wrote:
>>
>> 	Sorry, I have forgotten last line of /etc/ntp.conf:
>>
>> restrict 192.168.0.0 mask 255.255.0.0
> 
> The default is to allow everything, except for the server to synchronize
> to itself. So that restrict line does nothing as it only allows "everything" 
> for your local network for a second time.
> 
> But that's not your problem.
> 
> 
>> 	I have notice a minor issue. To show traffic activity, I have to check
>> UDP/123 on wm3 and wm4 as lagg0 doesn't show all packets. Example:
> 
> This sounds like a bug in lagg.
> 
> 
>> 16:16:25.208560 IP legendre.systella.fr.ntp > hilbert.systella.fr.ntp:
>> NTPv4, Server, length 48
> 
> So your NTP server _does_ answer. Do the clients still have a problem ?
> 

	Very strange. I have done all tests with my main workstation that _is
not synchronized_ (delta between this workstation and server is around
0.1s) but some other clients are now synchronized. I will restart this
workstation to check.

>> tcpdump -i lagg0 seems to only print incoming packets.
> 
> Looks like it, while lagg registers as an ethernet device (which
> adds a packet tap), it doesn't emit packages itself, but relays
> it only to the output routine of a member interface. It needs to
> invoke the tap routine itself, so that tcpdump (and other packet
> filters like npf) can see the packets.

	I have installed a VM with -10 to test tap device.

	Regards,

	JB


Home | Main Index | Thread Index | Old Index