On Thu, May 28, 2015 at 03:41:49PM +0100, Ken Moffat wrote: > On Wed, May 27, 2015 at 10:53:00PM -0700, Cong Wang wrote: > > (Please always Cc netdev for networking bugs.) > > Sorry, didn't spot that. But anyway > > > For example: > > > > 1) What is your network setup? iptables? routes? etc. > > > I'm using iptables. Ah, yes - it started dropping packets around > the time I last had a problem: > > May 27 00:48:26 ac4tv dhclient: DHCPREQUEST on eth0 to 192.168.7.254 > port 67 > May 27 00:48:27 ac4tv dhclient: DHCPACK from 192.168.7.254 > May 27 00:48:27 ac4tv dhclient: bound to 192.168.7.152 -- renewal in > 1787 seconds. > > That address came from my router, and I had been getting the same > address for an hour, tbut then the dropped packet messages start > appearing - they are for a different address, one that would have > been offered by my server: > Now that I've had time to think about this and look a bit more deeply, I can see that at one point I got a lease from my server, but then after a random length of time the client tried to renew and got a lease from the router. Some time after that, it failed because iptables rejected the nfs packets because they were "not for me".
So, not a kernel problem, and the reason I'm (now) seeing this on 4.0+ kernels is that I have not recently booted a system with an old (3.19 or earlier) kernel and kept it running for a long time. Thanks again, sorry to waste everybody's bandwidth. ĸen -- Nanny Ogg usually went to bed early. After all, she was an old lady. Sometimes she went to bed as early as 6 a.m. -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
