2 Beaglebones OTG makes internet access trouble.

Hi, this is my first post.
I have a trouble about OTG.

I enjoyed Pocketbeagle OTG works well.
SSH debian@, VNC, and internet access works well.

Then, I connect second OTG Beaglebone Black Rev.C.
SSH debian@, VNC, works.

But, Beaglebone internet access don’t works until then.

I use macOS 10.13.6

I restart macOS, then connect Pocket Beagle OTG only.
SSH debian@, VNC, works well.

But, Pocketbeagle internet access don’t works anymore.

And, Beaglebone Black Rev.C have same trouble too.

I wonder macOS network setting is confusing.

Do you have a same trouble?

Please inform to me Pocketbeagle can walk around internet.
And, 2 OTGs network settings.

Thank you.