Update fails to download additional packages due to firewall blockage

swupd system update goes through specific packages list download successfully

When it reaches additional packages stage, from clearlinux domain url, i got multiple download errors output. I copied the links and tried manually downloading over chrome and got an unusual network error. Internet connection was solid and working as usual, attempted other downloads without issue.

Quick search for chrome network error pointed to firewall issue.

Accessing my network router and disabling both ipv4 and IPv6 firewall solved the issue and i was able to successfully upgrade to the latest release.

Cheap router with no custom firewall configuration, never before had trouble downloading anything. Reporting because perhaps there’s a tweak to be made to prevent such issue.