I have a fresh installation of Debian Wheezy 7.6.0 amd64.
The post-up line does not execute when eth0 is mounted!
(by against my eth0 interface is mounted!)
I have to mount routes, and are not:
post-up /sbin/route add 1.2.3.4 dev eth0
simple test:
post-up touch /tmp/test
reboot (...)
cat /tmp/test
cat: /tmp/1: No such file or directory
Have you ever had this problem?
I find nothing in dmesg and syslog!