Thanks @Dan, I applied the patch https://launchpadlibrarian.net/448207988/resolved.patch to my VM, but the issue is still reproducing.
The md5sum line is before creating "$statedir/isc-dhcp-v4-$interface.conf", while I can see the isc-dhcp-v4-$interface.conf file is created on my VM.
I think the root cause is not same with bug 1849608
Thanks @Dan, I applied the patch https:/ /launchpadlibra rian.net/ 448207988/ resolved. patch to my VM, but the issue is still reproducing. isc-dhcp- v4-$interface. conf", while I can see the isc-dhcp- v4-$interface. conf file is created on my VM.
The md5sum line is before creating "$statedir/
I think the root cause is not same with bug 1849608