[SR-Users] rtpengine upgrade fails

[Juha Heinanen]

i build debian packages for rtpengine branch 3.3.0.0+0~mr3.4.1.0.  after
that i did 'apt-get dist-upgrade' and it failed like this:

Setting up ngcp-rtpengine-daemon (3.3.0.0+0~mr3.4.1.0) ...
Installing new version of config file /etc/init.d/ngcp-rtpengine-daemon ...
Restarting RTP/media proxy: ngcp-rtpengine-daemonFATAL: Module xt_MEDIAPROXY not found.
iptables: No chain/target/match by that name.
ip6tables: No chain/target/match by that name.
FAILED TO CREATE KERNEL TABLE 0, KERNEL FORWARDING DISABLED
invoke-rc.d: initscript ngcp-rtpengine-daemon, action "restart" failed.
dpkg: error processing ngcp-rtpengine-daemon (--configure):
 subprocess installed post-installation script returned error exit status 255

however, if i now run 'apt-get install ngcp-rtpengine-daemon', setting up
ngcp-rtpengine-daemon succeeds and also packages that depended on it
get installed fine:

Reading package lists... Done
Building dependency tree       
Reading state information... Done
ngcp-rtpengine-daemon is already the newest version.
0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
2 not fully installed or removed.
After this operation, 0 B of additional disk space will be used.
Do you want to continue [Y/n]? 
Setting up ngcp-rtpengine-daemon (3.3.0.0+0~mr3.4.1.0) ...
Restarting RTP/media proxy: ngcp-rtpengine-daemon.
Starting RTP/media proxy: ngcp-rtpengine-daemon already running.
Setting up ngcp-rtpengine (3.3.0.0+0~mr3.4.1.0) ...

any ideas why setting up ngcp-rtpengine-daemon fails with dist-upgrade?

-- juha