[GH-ISSUE #539] nc: invalid option -- 'U' #318

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opened 2026-02-27 15:58:14 +03:00 by kerem · 1 comment

kerem commented

2026-02-27 15:58:14 +03:00

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Originally created by @nkings10 on GitHub (Sep 10, 2022).
Original GitHub issue: https://github.com/retspen/webvirtcloud/issues/539

Hey,

I'm attempting to connect to KVM on unRAID 6.10.3 and have run into an issue where that the nc version installed does not have a -U option.

Im getting the following error:

Problem occurred with host Watermelon: End of file while reading data: nc: invalid option -- 'U' nc -h for help: Input/output error

Any assistance would be appreciated.

Thanks,
Nathan

Originally created by @nkings10 on GitHub (Sep 10, 2022). Original GitHub issue: https://github.com/retspen/webvirtcloud/issues/539 Hey, I'm attempting to connect to KVM on unRAID 6.10.3 and have run into an issue where that the nc version installed does not have a -U option. Im getting the following error: ``` Problem occurred with host Watermelon: End of file while reading data: nc: invalid option -- 'U' nc -h for help: Input/output error ``` Any assistance would be appreciated. Thanks, Nathan

kerem commented

2026-02-27 15:58:14 +03:00

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@nkings10 commented on GitHub (Sep 10, 2022):

After hours of troubleshooting, giving up, posting here and then spotting that nc was also called netcat I was able to solve my issue by installing netcat-openbsd-1.105-x86_64-2.tgz instead of nc-1.10-x86_64-1.txz via Nerd Pack. I am now able to connect.

@nkings10 commented on GitHub (Sep 10, 2022): After hours of troubleshooting, giving up, posting here and then spotting that nc was also called netcat I was able to solve my issue by installing `netcat-openbsd-1.105-x86_64-2.tgz` instead of `nc-1.10-x86_64-1.txz` via Nerd Pack. I am now able to connect.