Public bug reported:
We are using ubuntu 18.04 in an environment with two NIC in the same
subnet.
As part of network configuration we have created a routing table for
each NIC.
Every other time that we restart networkd we lose connectivity to eth0.
After tcpdump we noticed the reason we lose connectivity to eht0 is
routing problem. All connection will always go out from eht1.
If we restart netowrkd one more time this will fix the routing issue instantly.
Also on each reboot routing policy applies correctly.
The problem only appears when we restart netwrokd every other time.
We already have raised this issue with Netplan and they suggest this is
a systemd bug.
Please find the debugs in the attachments. Please don't hesitate to ask
if you require any further logs.
Regards
Arash
** Affects: systemd (Ubuntu)
Importance: Undecided
Status: Incomplete
** Tags: netplan routing systemd-network
** Attachment added: "systemd_network_bug"
https://bugs.launchpad.net/bugs/1790664/+attachment/5184529/+files/systemd_network_bug
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https://bugs.launchpad.net/bugs/1790664
Title:
routing policy not always applied on systemd-networkd restar
Status in systemd package in Ubuntu:
Incomplete
Bug description:
We are using ubuntu 18.04 in an environment with two NIC in the same
subnet.
As part of network configuration we have created a routing table for
each NIC.
Every other time that we restart networkd we lose connectivity to
eth0. After tcpdump we noticed the reason we lose connectivity to eht0
is routing problem. All connection will always go out from eht1.
If we restart netowrkd one more time this will fix the routing issue
instantly.
Also on each reboot routing policy applies correctly.
The problem only appears when we restart netwrokd every other time.
We already have raised this issue with Netplan and they suggest this
is a systemd bug.
Please find the debugs in the attachments. Please don't hesitate to
ask if you require any further logs.
Regards
Arash
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