Ubuntu 18.04 networking issue (connection drops after approx. 15 minutes)
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
linux (Ubuntu) |
Confirmed
|
Undecided
|
Unassigned |
Bug Description
I'm currently troubleshooting some network issues on Ubuntu 18.04 LTS Bionic. After checking a few logs I noticed that the networkd-dispatcher is generating errors. I'm unsure if this is a bug but I'd like to report it over here just to be sure:
```
Jun 04 18:14:21 [servername] systemd-
Jun 04 18:14:22 [servername] networkd-
Jun 04 18:14:23 [servername] networkd-
Jun 04 18:14:23 [servername] networkd-
Jun 04 18:14:23 [servername] networkd-
Jun 04 18:14:23 [servername] networkd-
```
These issues occur consistently on several servers. The problem is that I lose the connection specifically towards the internet after approx. 15 minutes. Internal facing interfaces (same hardware and driver) seem to behave differently and remain properly connected to the internal network. These network-dispatcher errors seem to occur simultanously when the connection on the external interface permanently drops.
The physical network links still appears to be online when the connection is lost.
I'm still also able to ping the default gateway from my provider to access the Internet. But all IP addresses beyond this gateway on the Internet seem to be unreachable.
I have disabled TCP offloading and firewalls to eliminate any influences. But that didn't work.
The ARP table shows that my gateway is a STALE record after the connection drops. So it seems related to the ARP-table or something likewise.
summary: |
- Ubuntu 18.04 networking issue (connection drop after approx. 15 minutes) + Ubuntu 18.04 networking issue (connection drops after approx. 15 + minutes) |
affects: | ubuntu → networkd-dispatcher (Ubuntu) |
Changed in networkd-dispatcher (Ubuntu): | |
status: | Expired → Confirmed |
tags: | added: cscc |
Thank you for taking the time to report this bug and helping to make Ubuntu better. It seems that your bug report is not filed about a specific source package though, rather it is just filed against Ubuntu in general. It is important that bug reports be filed about source packages so that people interested in the package can find the bugs about it. You can find some hints about determining what package your bug might be about at https:/ /wiki.ubuntu. com/Bugs/ FindRightPackag e. You might also ask for help in the #ubuntu-bugs irc channel on Freenode.
To change the source package that this bug is filed about visit https:/ /bugs.launchpad .net/ubuntu/ +bug/1775131/ +editstatus and add the package name in the text box next to the word Package.
[This is an automated message. I apologize if it reached you inappropriately; please just reply to this message indicating so.]