Remote Access several ext IP

[Graimes]

Server Version#: 1.15.8.1198
Player Version#: 3.102.0
Hello
I have two external IP which are used for several services. Is there any possibility to manualy set external IP? Or what services plex uses to define external ip?

[OttoKerner]

https://support.plex.tv/articles/200430283-network/

Of particular interest are ‘Preferred network interface’
and ‘Custom server access URLs’

[Graimes]

Thanks, I’ve already seen this link. Prefered network interface is not what I need cause I have only one internal IP and I’d prefer not to make another one for plex only.
And I’ve also set custom server access URL. In spite of this sometimes I can see another IP (which is not binded to URL that I set at “custom server access URL”).
In my case I use both uplinks and both IP that comes to my router. And because all packets from my computer can go via both uplinks in the ratio of 2 to 1 (in turn because of settings) I have some troubles with plex. And if I know what ports or addresses plex uses to find out external IP I could manage its packets to find only needed IP.