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Maniphest T3852

DHCP client issue - interface has two dhclient processes when link is unpluged and then plug again
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Description

version: 1.3
interface has two dhclient processes when link is unpluged and then plug again

before interface is unpluged

root      3407     1  0 11:08 ?        00:00:00 /sbin/dhclient -4 -nw -cf /var/lib/dhcp/dhclient_eth6.conf -pf /var/lib/dhcp/dhclient_eth6.pid -lf /var/lib/dhcp/dhclient_eth6.leases  eth6

after unpluging the interface and plug it again, get two dhclient processes:

root      3407     1  0 11:08 ?        00:00:00 /sbin/dhclient -4 -nw -cf /var/lib/dhcp/dhclient_eth6.conf -pf /var/lib/dhcp/dhclient_eth6.pid -lf /var/lib/dhcp/dhclient_eth6.leases eth6
root      3641     1  0 11:16 ?        00:00:00 /sbin/dhclient -q -nw -cf /var/lib/dhcp/dhclient_eth6.conf -pf /var/lib/dhcp/dhclient_eth6.pid -lf /var/lib/dhcp/dhclient_eth6.leases eth6

the reason is: use systemctl start dhclient, but when interface link is down/up, /etc/netplug/linkdown.d/dhclient or /etc/netplug/linkup.d/dhclient script call /sbin/dhclient directly. The scripts should systemctl I think

Details

Version
1.3 equuleus above
Is it a breaking change?
Unspecified (possibly destroys the router)
Issue type
Bug (incorrect behavior)

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Event Timeline

u-xc created this task.Sep 24 2021, 5:40 AM
c-po assigned this task to zsdc.Sep 25 2021, 6:46 AM
c-po triaged this task as High priority.
c-po edited projects, added VyOS 1.3 Equuleus (1.3.0-epa1); removed VyOS 1.3 Equuleus.
zsdc added a parent task: T3471: DHCP hook is not able to detect all running DHCP instances.Sep 28 2021, 9:54 AM
zsdc changed the task status from Open to Needs testing.Sep 28 2021, 10:08 AM

The issue solved in the https://github.com/vyos/vyos-1x/pull/1017
However, the question if netplug script is necessary at all is still opened.

pasik subscribed.Sep 28 2021, 11:24 AM
Restricted Repository Identity mentioned this in rVYOSONEX2a79df6398ea: Merge pull request #1017 from zdc/T3852-equuleus.Sep 30 2021, 6:26 PM
zsdc mentioned this in rVYOSONEX2224130742d2: dhclient: T3852: Fixed dhclient processes search.Sep 30 2021, 6:26 PM
syncer edited projects, added VyOS 1.3 Equuleus (1.3.0); removed VyOS 1.3 Equuleus (1.3.0-epa1).Nov 1 2021, 10:09 PM
Restricted Repository Identity mentioned this in rVYOSONEXb6a9a27a72d0: Merge pull request #1305 from scj643/container_naming_fix.Apr 27 2022, 6:51 PM
scj643 mentioned this in rVYOSONEX451972daded7: container: op-mode: T3852: Fix wording on container commands.Apr 27 2022, 6:51 PM
c-po mentioned this in rVYOSONEX7e7c6a5f120f: container: op-mode: T3852: use XML inline podman commands.May 8 2022, 7:59 PM
syncer edited projects, added VyOS 1.3 Equuleus (1.3.3); removed VyOS 1.3 Equuleus (1.3.0).Aug 29 2022, 7:04 AM
syncer closed this task as Resolved.Jul 11 2023, 1:19 PM
syncer moved this task from Need Triage to Finished on the VyOS 1.3 Equuleus (1.3.3) board.