Fix build on systems without RTM_OLD*
For example, FreeBSD has removed RTM_OLDADD and RTM_OLDDEL from its API
in March 2014, with the message:
Garbage collect long time obsoleted (or never used) stuff from routing API
Only attempt to define behavior for these cases if they are defined.
Author: Ben Kaduk <firstname.lastname@example.org>
src/lib/apputils/net-server.c | 4 ++++
1 files changed, 4 insertions(+), 0 deletions(-)