grafana stuck in pending state

[KraigTersigni]

We have a distributed deployment and I recently added a new Forward Node. After the forward node was added, grafana stopped working. When I run so-status is shows so-grafana pending. I tried restarting it, stopping then starting it and even ran salt-call state.highstate. But they all seem to fail on grafana. Here's what I get when trying to start grafana.

ID: so-grafana
Function: docker_container.running
Result: False
Comment: Created container 'so-grafana'. Failed to start container 'so-grafana': 'Error 500: driver failed programming external connectivity on endpoint so-grafana (71caa133897a0b969af7780ff9da7a18637dabb59f7a68bbeb46d7f594414e25): (COMMAND_FAILED: '/usr/sbin/iptables -w10 -t filter -A DOCKER ! -i docker0 -o docker0 -p tcp -d 172.17.0.6 --dport 3000 -j ACCEPT' failed: iptables: No chain/target/match by that name.
)'.
Started: 19:36:51.778128
Duration: 717.674 ms
Changes:

Any suggestions will be greatly appreciated.