Bug#932769: general: DHCP request bug when storage lost
Package: general
Severity: important
Tags: l10n
Dear Maintainer,
While doing unrelated storage testing for our VMware integrated product, we purposefully recreated
a storage outage by removing the iSCSI initiators from the backing array hosting the vmdk disk
images for the virtual machine.
Upon removal of uplinks to storage, the VM goes into a R/O file system state after 5-10 minutes.
When storage initiators are brought back up and the LUNs are rescanned, the VM begins to
rapidly request DHCP leases from an ISC DHCP server. This DoS's the server in a way due
to the number of DHCPDECLINE errors, and the interface attempts to take and discard IP's in a
rapid fashion.
This only seems to appear on this distribution, and I can't replicate the behavior on Debian 9
or in a desktop environment.
-- System Information:
Debian Release: 10.0
APT prefers stable
APT policy: (500, 'stable')
Architecture: amd64 (x86_64)
Kernel: Linux 4.19.0-5-amd64 (SMP w/1 CPU core)
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8), LANGUAGE=en_US.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /usr/bin/dash
Init: systemd (via /run/systemd/system)
LSM: AppArmor: enabled
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