Issue
"IP Address" field is not getting set with the correct IP for CI with multiple IP addresses.
Logic used by Discovery to "IP Address" value on CI and Network Adapter Card
The fact that Docker is installed on the device is not meaningful here.
There are two scenarios.
Scenario #1
When there are multiple IP addresses with each one configured for a different Network Adapter (thus different MAC address)
If it is discovered in the Identification network payload that the original IP address is still enabled on the source target despite not being the most recent source target of the scan, discovery of the source target when the IP address is already set in the Configuration Item (CI) will not update the IP address.
The alternative IP address must be disabled on the source target in order to update it, or the CI's ip address field can be cleared, followed by a new scan using the chosen target.
Scenario #2
When there are multiple IP addresses configured on the same Network Adapter Card
In the Network Adapter record, only one IP address is permitted per MAC due to discovery.
The creation of numerous (IP addresses) to one (NIC) records and their subsequent relation to a CI are not permitted by discovery.
When this occurs, the first IP address listed will ultimately be the one used for the CI ip address field.
Both scenarios are out of the box (OOTB) behavior.
Example
This is an example for the second scenario
Note the same MAC address but multiple IP addresses returned in the payload.
=>"name":"docker0","mac_address":"00:50:52:f9:8a:a3","ip_addresses":[{"ip_address":"172.17.0.1"
=>"name":"eth0","mac_address":"00:50:52:f9:8a:a3","ip_addresses":[{"ip_address":"10.249.138.163"
=> "00:50:52:f9:8a:a3" = "00:50:52:f9:8a:a3"
"Linux - Identity" Network Adapter Payload snippett:
{"related_data":{"adapters":[{"name":"docker0","mac_address":"00:50:52:f9:8a:a3","ip_addresses":[{"ip_address":"172.17.0.1","ip_version":4,"netmask":"255.255.0.0"},{"ip_address":"fe80::42:fdff:fecd:c6a3","ip_version":6,"netmask":"64"}],"ip_address":"172.17.0.1","netmask":"255.255.0.0","routes":{"ifRoutes":[{"dest_ip_network":"172.17.0.0/16","router_interface":"docker0"}],"gwRoutes":[]}},{"name":"eth0","mac_address":"00:50:52:f9:8a:a3","ip_addresses":[{"ip_address":"10.249.138.163","ip_version":4,"netmask":"255.255.255.0"},{"ip_address":"fe80::250:52ff:fef9:8aa3","ip_version":6,"netmask":"64"}],"ip_address":"10.249.138.163","netmask":"255.255.255.0","ip_default_gateway":"10.249.138.1","routes":{"ifRoutes":[{"dest_ip_network":"10.249.138.0/24","router_interface":"eth0"},{"dest_ip_network":"169.254.0.0/16","router_interface":"eth0"}],"gwRoutes":[{"dest_ip_network":"0.0.0.0/0","next_hop_ip_address":"10.249.138.1","route_interface":"eth0"}]}}],"default_gateway":"10.249.138.1"}}
</output>
