Hi,
Last few days I’ve been experiencing about 20% packet loss when Docker is running. Whenever I stop Docker the server no longer has connectivity issues.
I think it’s something with IPTables. See output below:
plex@plex:~$ sudo iptables --list
Chain INPUT (policy ACCEPT)
target prot opt source destinationChain FORWARD (policy DROP)
target prot opt source destination
DOCKER-USER all – anywhere anywhere
DOCKER-ISOLATION-STAGE-1 all – anywhere anywhere
ACCEPT all – anywhere anywhere ctstate RELATED,ESTABLISHED
DOCKER all – anywhere anywhere
ACCEPT all – anywhere anywhere
ACCEPT all – anywhere anywhereChain OUTPUT (policy ACCEPT)
target prot opt source destinationChain DOCKER (1 references)
target prot opt source destination
ACCEPT tcp – anywhere 172.17.0.2 tcp dpt:9000
ACCEPT tcp – anywhere 172.17.0.3 tcp dpt:9091Chain DOCKER-ISOLATION-STAGE-1 (1 references)
target prot opt source destination
DOCKER-ISOLATION-STAGE-2 all – anywhere anywhere
RETURN all – anywhere anywhereChain DOCKER-ISOLATION-STAGE-2 (1 references)
target prot opt source destination
DROP all – anywhere anywhere
RETURN all – anywhere anywhereChain DOCKER-USER (1 references)
target prot opt source destination
RETURN all – anywhere anywhere
OS: Ubuntu 18.04
Containers: Portainer, PLEX and transmission-openvpn
If anybody has a clue what could be wrong, let me know