Public bug reported:
Binary package hint: network-manager
When connecting to an OpenVPN VPN with NetworkManager, two duplicate IP
addresses with only different netmasks are assigned to the tunnel
interface. Output of ip addr show dev tun0 is as follows:
4: tun0: <POINTOPOINT,MULTICAST,NOARP,UP,LOWER_UP> mtu 1412 qdisc pfifo_fast
qlen 100
link/[65534]
inet 192.168.11.26 peer 192.168.11.25/32 scope global tun0
inet 192.168.11.26 peer 192.168.11.25/24 scope global tun0
This breaks some packages such as sofia-sip when they try to glob bind to all
addresses on the system which results in "Address already in use" errors.
[02:08:03] [Shuttle] [cobi] [~/sofsipcli/sofsip-cli] $ lsb_release -rd
Description: Ubuntu 8.04.1
Release: 8.04
[02:10:22] [Shuttle] [cobi] [~/sofsipcli/sofsip-cli] $ apt-cache policy
network-manager
network-manager:
Installed: 0.6.6-0ubuntu5
Candidate: 0.6.6-0ubuntu5
Version table:
*** 0.6.6-0ubuntu5 0
500 http://us.archive.ubuntu.com hardy/main Packages
100 /var/lib/dpkg/status
** Affects: network-manager (Ubuntu)
Importance: Undecided
Status: New
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OpenVPN configuration assigns duplicate addresses
https://bugs.launchpad.net/bugs/286836
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