LPM Trie methods not available in user space program (python)


Hello all,
I am trying to retrieve the keys of an LPM Trie in my user space program (similar to https://github.com/iovisor/bcc/blob/master/examples/networking/xdp/xdp_macswap_count.py) however, I am actually getting nothing.
The appropriate keys and values are inserted from the kernel space program (these are actually inserted, I have validated it by printing the values from the LPM Trie that match my packets - in the kernel space program -).
The weirdest thing is that when I substitute the LPM Trie with a BPF_HASH, I can retrieve the existing keys. According to the https://github.com/iovisor/bcc/blob/master/src/python/bcc/table.py , both LPM and BPF_HASH are inheriting the same class and share the same methods for manipulating keys and values.
If you have any thoughts or recommendations please share them.
Thank you in advance.

I am using an Ubuntu machine 16.04.6 LTS with kernel 4.15.0-60-generic and bcc (0.10.0).