Public bug reported:
After upgrading to Ubuntu 15.04, I discovered that the network routes
that were supposed to be added by zebra for my openvpn tun0 interface
weren't there. On further investigation it seems that quagga is getting
the wrong IP details for this point-to-point interface. FYI This openvpn
interface (tun0) uses the 'p2p' topology in openvpn configuration.
When I first set this up over a year ago I made some notes that included
the output from the show ip route command (from 'telnet localhost
zebra' session) which showed:
S* 192.168.10.0/24 [1/0] via 192.168.10.25, tun0
C* 192.168.10.25/32 is directly connected, tun0
However since upgrading to Ubuntu 15.04, the equivalent lines now show:
S 192.168.10.0/24 [1/0] via 192.168.10.25 inactive
C* 192.168.20.25/32 is directly connected, tun0
The key difference here is the IP address in the 'C' line. In the former
case the IP address is the remote end of the tunnel, 192.168.10.25,
which is correct. In the latter case, it is the IP address of the local
end of the tunnel, 192.168.20.25. Consequently, the route in the 'S' is
marked inactive and therefore doesn't get added to the routing table.
Here are the details for the tun0 interface from ifconfig:
tun0 Link encap:UNSPEC HWaddr
00-00-00-00-00-00-00-00-00-00-00-00-00-00-00-00
inet addr:192.168.20.25 P-t-P:192.168.10.25 Mask:255.255.255.255
UP POINTOPOINT RUNNING NOARP MULTICAST MTU:1500 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:50 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:100
RX bytes:0 (0.0 B) TX bytes:14080 (14.0 KB)
BTW I also have another openvpn interface (tun1) which uses 'subnet'
topology (rather than 'p2p'), and it is working fine.
ProblemType: Bug
DistroRelease: Ubuntu 15.04
Package: quagga 0.99.23.1-1
ProcVersionSignature: Ubuntu 3.19.0-15.15-generic 3.19.3
Uname: Linux 3.19.0-15-generic x86_64
ApportVersion: 2.17.2-0ubuntu1
Architecture: amd64
Date: Wed Apr 29 20:47:06 2015
ExecutablePath: /usr/lib/quagga/zebra
InstallationDate: Installed on 2014-05-04 (360 days ago)
InstallationMedia: Ubuntu 14.04 LTS Trusty Tahr - Release amd64 (20140417)
ProcEnviron:
PATH=(custom, no user)
LANG=en_NZ.UTF-8
LANGUAGE=en_NZ:en
SourcePackage: quagga
UpgradeStatus: Upgraded to vivid on 2015-04-26 (3 days ago)
mtime.conffile..etc.quagga.daemons: 2014-06-08T22:14:02.457222
** Affects: quagga (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug vivid
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https://bugs.launchpad.net/bugs/1449922
Title:
point-to-point interface routes marked inactive
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