I have created a number of docker containers and have assigned them static IP's. I can ping them from any other device on the network and they work as expected.  I have a mail server running in one of the dockers and would like the unraid server to be able to send email messages to that server.

 

When I ping the docker from the unraid server I get

From tower.local (192.168.0.31) icmp_seq=1 Destination Host Unreachable

 

then when I check the arp table i get

mail.local           (incomplete)                              br0

 

Is there some setting that will allow the docker containers to respond to the unraid server?

 

Thanks

 

Chris

Read this.

https://forums.unraid.net/topic/54882-630-how-to-setup-dockers-without-sharing-unraid-ip-address/

Specifically this.

Quote

The container will not be allowed to talk to unRAID host due to the underlying security implementation with the macvlan driver used by Docker. This is by design

 

Ok it is by design.

 

 

Why is this a security problem? When i set one container to have static ip i still want that other container can reach this container and other way around.

43 minutes ago, snoopy86 said:

Why is this a security problem? When i set one container to have static ip i still want that other container can reach this container and other way around.

Docker container on a (macvlan/ipvlan)-bridge can reach each other.

The security aspect is network isolation between any of the virtualized enviroments to the host system.

Besides that, theres a checkbox to remove it.

Edited February 16, 20242 yr by Mainfrezzer

2 hours ago, Mainfrezzer said:

Docker container on a (macvlan/ipvlan)-bridge can reach each other.

The security aspect is network isolation between any of the virtualized enviroments to the host system.

Besides that, theres a checkbox to remove it.

Tnx. I have missed "Host access to custom networks" setting.