Your message dated Sat, 19 Jul 2025 10:44:15 +0200 with message-id <[email protected]> and subject line Re: [ISC-Bugs #44494] Starting dhclient without an interface does not work: No broadcast interfaces found - exiting. has caused the Debian Bug report #852173, regarding Starting dhclient without an interface does not work: No broadcast interfaces found - exiting. to be marked as done.
This means that you claim that the problem has been dealt with. If this is not the case it is now your responsibility to reopen the Bug report if necessary, and/or fix the problem forthwith. (NB: If you are a system administrator and have no idea what this message is talking about, this may indicate a serious mail system misconfiguration somewhere. Please contact [email protected] immediately.) -- 852173: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=852173 Debian Bug Tracking System Contact [email protected] with problems
--- Begin Message ---Package: isc-dhcp-client Version: 4.3.5-1 Hi! dhclient(8) says: The names of the network interfaces that dhclient should attempt to configure may be specified on the command line. If no interface names are specified on the command line dhclient will normally identify all network interfaces, eliminating non-broadcast interfaces if possible, and attempt to configure each interface. However, starting dhclient without an interface does not actually work: root@shepard:~# ip address show 1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1 link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00 inet 127.0.0.1/8 scope host lo valid_lft forever preferred_lft forever inet6 ::1/128 scope host valid_lft forever preferred_lft forever 4: enp0s25: <BROADCAST,MULTICAST> mtu 1500 qdisc pfifo_fast state DOWN group default qlen 1000 link/ether XX:XX:XX:XX:XX:XX brd ff:ff:ff:ff:ff:ff root@shepard:~# dhclient -v Internet Systems Consortium DHCP Client 4.3.5 Copyright 2004-2016 Internet Systems Consortium. All rights reserved. For info, please visit https://www.isc.org/software/dhcp/ No broadcast interfaces found - exiting. root@shepard:~# ip address show 1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1 link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00 inet 127.0.0.1/8 scope host lo valid_lft forever preferred_lft forever inet6 ::1/128 scope host valid_lft forever preferred_lft forever 4: enp0s25: <BROADCAST,MULTICAST> mtu 1500 qdisc pfifo_fast state DOWN group default qlen 1000 link/ether XX:XX:XX:XX:XX:XX brd ff:ff:ff:ff:ff:ff root@shepard:~# I also tried bringing the interface up first, but this didn't help: root@shepard:~# ip address show 1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1 link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00 inet 127.0.0.1/8 scope host lo valid_lft forever preferred_lft forever inet6 ::1/128 scope host valid_lft forever preferred_lft forever 4: enp0s25: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP group default qlen 1000 link/ether XX:XX:XX:XX:XX:XX brd ff:ff:ff:ff:ff:ff root@shepard:~# dhclient -v Internet Systems Consortium DHCP Client 4.3.5 Copyright 2004-2016 Internet Systems Consortium. All rights reserved. For info, please visit https://www.isc.org/software/dhcp/ No broadcast interfaces found - exiting. root@shepard:~# ip address show 1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1 link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00 inet 127.0.0.1/8 scope host lo valid_lft forever preferred_lft forever inet6 ::1/128 scope host valid_lft forever preferred_lft forever 4: enp0s25: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP group default qlen 1000 link/ether XX:XX:XX:XX:XX:XX brd ff:ff:ff:ff:ff:ff root@shepard:~# However, explicitly specifying an interface worked: root@shepard:~# ip address show 1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1 link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00 inet 127.0.0.1/8 scope host lo valid_lft forever preferred_lft forever inet6 ::1/128 scope host valid_lft forever preferred_lft forever 4: enp0s25: <BROADCAST,MULTICAST> mtu 1500 qdisc pfifo_fast state DOWN group default qlen 1000 link/ether XX:XX:XX:XX:XX:XX brd ff:ff:ff:ff:ff:ff root@shepard:~# dhclient enp0s25 root@shepard:~# ip address show 1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1 link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00 inet 127.0.0.1/8 scope host lo valid_lft forever preferred_lft forever inet6 ::1/128 scope host valid_lft forever preferred_lft forever 4: enp0s25: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP group default qlen 1000 link/ether XX:XX:XX:XX:XX:XXff:ff inet 192.168.178.29/24 brd 192.168.178.255 scope global enp0s25 valid_lft forever preferred_lft forever root@shepard:~# Please note that others have noticed this problem as well [0,1]. It was apparently even submitted to upstream [2]. However, due to the lack of a public bugtracker [3], I can't verify that. Best regards Alexander Kurtz [0] https://serverfault.com/questions/714938/dhclient-no-broadcast-interfaces-found-but-eth0-is-up-and-broadcast [1] https://lists.isc.org/pipermail/dhcp-users/2013-March/016563.html [2] https://lists.isc.org/pipermail/dhcp-users/2013-March/016584.html [3] https://www.isc.org/community/report-bug/
signature.asc
Description: This is a digitally signed message part
--- End Message ---
--- Begin Message ---Version: 4.4.3-P1-2 Hi, starting dhclient without an interface works nowadays, thus closing. Best regards Alexander Kurtz
--- End Message ---
