Bug#858070: ifupdown: ifdown puts the interface down before removing the IPv6 addresses
Package: ifupdown Version: 0.8.36 Severity: normal Tags: ipv4 ipv6 Debian Bug #858070 remains in ifdown version 0.8.36 Multipe static IPv4 and IPv6 address are affected because interface is flushed AND downed AFTER EVERY address delete. admin@hef1v10:~$ cat /etc/network/interfaces.d/ens224 allow-hotplug ens224 iface ens224 inet static address 64.62.193.70/28 iface ens224 inet static address 64.62.193.74/28 iface ens224 inet static address 64.62.193.75/28 iface ens224 inet static address 64.62.193.76/28 iface ens224 inet static address 64.62.193.77/28 iface ens224 inet static address 64.62.193.78/28 iface ipv6all inet6 static accept_ra 0 # Accept router advertisements 0=off autoconf 0 # Perform stateless autoconfiguration 0=off dad-attempts 0 # Duplicate Address Detection attempts privext 0 # Privacy extensions (RFC3041) 0=off iface ens224 inet6 static inherits ipv6all address 2001:470:44:2::403e:c146/64 iface ens224 inet6 static inherits ipv6all address 2001:470:44:2::403e:c14a/64 iface ens224 inet6 static inherits ipv6all address 2001:470:44:2::403e:c14e/64 iface ens224 inet6 static inherits ipv6all address 2001:470:44:2:20c:29ff:fe60:aa05/64 iface ens224 inet6 static inherits ipv6all address 2001:470:44:2:20c:29ff:feba:79b3/64 iface ens224 inet6 static inherits ipv6all address 2001:470:44:2:20c:29ff:fee1:45b7/64 admin@hef1v10:~$ sudo ifdown --version ifdown version 0.8.36 Copyright (c) 1999-2009 Anthony Towns 2010-2015 Andrej Shadura 2015-2017 Guus Sliepen This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. admin@hef1v10:~$ sudo ifdown --verbose ens224 ifdown: parsing file /etc/network/interfaces.d/ens224 ifdown: configuring interface ens224=ens224 (inet) /bin/run-parts --verbose /etc/network/if-down.d /sbin/ip addr del 64.62.193.70/255.255.255.240 broadcast 64.62.193.79 dev ens224 label ens224 /sbin/ip -4 addr flush dev ens224 /sbin/ip link set dev ens224 down /bin/run-parts --verbose /etc/network/if-post-down.d ifdown: configuring interface ens224=ens224 (inet) /bin/run-parts --verbose /etc/network/if-down.d /sbin/ip addr del 64.62.193.74/255.255.255.240 broadcast 64.62.193.79 dev ens224 label ens224 RTNETLINK answers: Cannot assign requested address /sbin/ip -4 addr flush dev ens224 /sbin/ip link set dev ens224 down /bin/run-parts --verbose /etc/network/if-post-down.d ifdown: configuring interface ens224=ens224 (inet) /bin/run-parts --verbose /etc/network/if-down.d /sbin/ip addr del 64.62.193.75/255.255.255.240 broadcast 64.62.193.79 dev ens224 label ens224 RTNETLINK answers: Cannot assign requested address /sbin/ip -4 addr flush dev ens224 /sbin/ip link set dev ens224 down /bin/run-parts --verbose /etc/network/if-post-down.d ifdown: configuring interface ens224=ens224 (inet) /bin/run-parts --verbose /etc/network/if-down.d /sbin/ip addr del 64.62.193.76/255.255.255.240 broadcast 64.62.193.79 dev ens224 label ens224 RTNETLINK answers: Cannot assign requested address /sbin/ip -4 addr flush dev ens224 /sbin/ip link set dev ens224 down /bin/run-parts --verbose /etc/network/if-post-down.d ifdown: configuring interface ens224=ens224 (inet) /bin/run-parts --verbose /etc/network/if-down.d /sbin/ip addr del 64.62.193.77/255.255.255.240 broadcast 64.62.193.79 dev ens224 label ens224 RTNETLINK answers: Cannot assign requested address /sbin/ip -4 addr flush dev ens224 /sbin/ip link set dev ens224 down /bin/run-parts --verbose /etc/network/if-post-down.d ifdown: configuring interface ens224=ens224 (inet) /bin/run-parts --verbose /etc/network/if-down.d /sbin/ip addr del 64.62.193.78/255.255.255.240 broadcast 64.62.193.79 dev ens224 label ens224 RTNETLINK answers: Cannot assign requested address /sbin/ip -4 addr flush dev ens224 /sbin/ip link set dev ens224 down /bin/run-parts --verbose /etc/network/if-post-down.d ifdown: configuring interface ens224=ens224 (inet6) /bin/run-parts --verbose /etc/network/if-down.d /sbin/ip -6 addr del 2001:470:44:2::403e:c146/64 dev ens224 RTNETLINK answers: Cannot assign requested address /sbin/ip -6 addr flush dev ens224 /sbin/ip link set dev ens224 down /bin/run-parts --verbose /etc/network/if-post-down.d ifdown: configuring interface ens224=ens224 (inet6) /bin/run-parts --verbose /etc/network/if-down.d /sbin/ip -6 addr del 2001:470:44:2::403e:c14a/64 dev ens224 RTNETLINK answers: Cannot assign requested address /sbin/ip -6 addr flush dev ens224 /sbin/ip link set dev ens224 down /bin/run-parts --verbose /etc/network/if-post-down.d ifdown: configuring interface ens224=ens224 (inet6) /bin/run-parts --verbose /etc/network/if-down.d /sbin/ip -6 addr del 2001:470:44:2::
Bug#858070: ifupdown: ifdown puts the interface down before removing the IPv6 addresses
Package: ifupdown Version: 0.8.19 Severity: normal Tags: ipv6 Dear Maintainer, when both IPv4 and IPv6 are statically configured, ifdown first removes the IPv4 addresses, then puts the interfaces down, and then tries to remove the IPv6 addresses, which results in the error message "RTNETLINK answers: Cannot assign requested address". Here is the verbose output: root@host:~# ifdown -v ens2 ifdown: reading directory /etc/network/interfaces.d ifdown: parsing file /etc/network/interfaces.d/ens2 ifdown: configuring interface ens2=ens2 (inet) /bin/run-parts --verbose /etc/network/if-down.d /bin/ip addr del 10.0.0.1/255.255.255.255 broadcast 10.0.0.1 dev ens2 label ens2 /bin/ip link set dev ens2 down /bin/run-parts --verbose /etc/network/if-post-down.d ifdown: configuring interface ens2=ens2 (inet6) /bin/run-parts --verbose /etc/network/if-down.d /bin/ip -6 addr del fd00::1/128 dev ens2 RTNETLINK answers: Cannot assign requested address /bin/ip link set dev ens2 down /bin/run-parts --verbose /etc/network/if-post-down.d
