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** Changed in: linux (Ubuntu)
Status: New => Incomplete
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https://bugs.launchpad.net/bugs/1695829
Title:
IP Subnet to internet routing fails 5x/day after latest 16.04 LTS
updates
Status in linux package in Ubuntu:
Incomplete
Bug description:
Since updating Ubuntu 16.04.02 LTS with all latest patches on 6/2, my
subnet internet routing is failing 5x+/day for my Windows 10 machine.
Unfortunately, Windows 10 is also a moving target, which also updated
6/2, about when this problem started. Bug report also filed with MS.
Why I think it's Ubuntu... When Windows 10 based web pages stop
loading, email stops transmitting, and internet-based CAD licensing
stops working, I can get everything working like new again by typing
"firehol start", which refreshes iptables entries. So I suspect the
issue might be related to either the Linux kernel or iptables.
I also see another bug dated 2-Jun-2017 for IP subnet routing, but
that one is running on an ARM processor. Mine is AMD FX-8120, Ubuntu
16.04.2 LTS x64. The reported problem sounds similar.
I performed an IP Tables dump during "operating" and "not routing"
states. I can't see any difference between the two dumps, but running
firehol start clears the problem.
While in the "problem state", my Ubuntu server does have internet
connectivity. i.e. Loading web pages on Firefox on the Server/router
does work. On the "routed" Windows 10 machine, what doesn't work are;
ping (internet), Firefox (internet), Thunderbird (internet)... From
the Windows 10 machine what does work are; ping (server), Firefox
(server apache web pages), Thunderbird (server imaps accounts). So
the Windows 10 machine still has full server access over gigabit
ethernet, but can't see any internet based services, where IP routing
is required to succeed. "firehol start" restores routing until for a
brief time when the Windows machine is busy accessing the internet.
Routing stayed up all night when there was no Windows 10 internet
routing activity. Resuming activity in the morning caused a quick
routing failure.
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