Package: isc-dhcp-client
Version: 4.4.3-P1-1.1
Severity: important
Tags: patch pending

As described in this merged MR [0], dhclient-script fails to handle
the resolv.conf when an dhclient is called inside a network namespace.

[0] https://salsa.debian.org/debian/isc-dhcp/-/merge_requests/8

This is an example from an autopkgetst [1] (to be merged):

    ip netns exec client dhclient ptp-veth-client
    mv: cannot move '/etc/resolv.conf.dhclient-new.1207' to '/etc/resolv.conf': 
Device or resource busy

[1] https://salsa.debian.org/santiago/isc-dhcp/-/jobs/4139012#L323

Cheers,

 -- Santiago

-- System Information:
Debian Release: 12.0
  APT prefers stable-security
  APT policy: (500, 'stable-security'), (500, 'unstable'), (500, 'testing'), 
(500, 'stable'), (1, 'experimental')
Architecture: amd64 (x86_64)
Foreign Architectures: i386

Kernel: Linux 6.1.0-0-amd64 (SMP w/8 CPU threads; PREEMPT)
Kernel taint flags: TAINT_UNSIGNED_MODULE, TAINT_LIVEPATCH
Locale: LANG=es_CO.UTF-8, LC_CTYPE=es_CO.UTF-8 (charmap=UTF-8), LANGUAGE not set
Shell: /bin/sh linked to /usr/bin/dash
Init: systemd (via /run/systemd/system)
LSM: AppArmor: enabled

Versions of packages isc-dhcp-client depends on:
ii  debianutils  5.7-0.4
ii  iproute2     6.1.0-2
ii  libc6        2.36-8

Versions of packages isc-dhcp-client recommends:
ii  isc-dhcp-common  4.4.3-P1-1.1

Versions of packages isc-dhcp-client suggests:
ii  avahi-autoipd         0.8-9
pn  isc-dhcp-client-ddns  <none>
pn  resolvconf            <none>

-- Configuration Files:
/etc/apparmor.d/sbin.dhclient changed [not included]

-- no debconf information

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