Fix an issue with routing between nodes, when flexisip nodes are behind a nat.

The fix consists in forcing messages sent between nodes to use the internal transport.
10 jobs for master in 34 minutes and 35 seconds (queued for 6 seconds)
Status Job ID Name Coverage
  Build
passed #128814
docker-archlinux-latest
job-archlinux-latest-ninja-gcc

00:06:35

passed #128815
docker-centos7
job-centos7-makefile-clang

00:05:57

passed #128816
docker-debian8
job-debian8-ninja-gcc

00:07:53

passed #128817
docker-debian9
job-debian9-ninja-clang

00:06:12

failed #128820
macosx allowed to fail
job-macosx-ninja

00:05:47

passed #128819
docker-ubuntu-18.04
job-ubuntu-18.04-makefile-gcc

00:06:36

passed #128818
docker-ubuntu-rolling
job-ubuntu-rolling-ninja-gcc

00:06:34

 
  Package
passed #128821
docker-centos7
job-centos7-rpm

00:10:45

passed #128822
docker-debian8
job-debian8-deb

00:25:22

passed #128823
docker-debian9
job-debian9-deb

00:23:59

 
Name Stage Failure
failed
job-macosx-ninja Build
         ^~~~~~~~~~~~~~~~~~~~
1 error generated.
[118/256] Building CXX object src/CMakeFiles/linphone.dir/chat/modifier/file-transfer-chat-message-modifier.cpp.o
[119/256] Building CXX object src/CMakeFiles/linphone.dir/conference/local-conference.cpp.o
[120/256] Building CXX object src/CMakeFiles/linphone.dir/conference/params/media-session-params.cpp.o
[121/256] Building CXX object src/CMakeFiles/linphone.dir/chat/cpim/parser/cpim-parser.cpp.o
ninja: build stopped: subcommand failed.
ninja: build stopped: subcommand failed.
ERROR: Job failed: exit status 1