computing:dhcpcd
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| computing:dhcpcd [2026/09/07 19:03] – oemb1905 | computing:dhcpcd [2026/09/07 19:49] (current) – oemb1905 | ||
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| - | === Updates | + | === Update |
| It is not enough to simply instruct dhcpcd to not set routes for the bridges, you also have to tell Network Manager the same. To do this, open nm-connection-editor and open the routes submenu in each bridge. Click both the options there for all the IoT or restricted bridges; leave the primary or private bridge untouched. Then, restart networking and NetworkManager and you should only see the default route for the private subnet/lan. Here is what that looks like: | It is not enough to simply instruct dhcpcd to not set routes for the bridges, you also have to tell Network Manager the same. To do this, open nm-connection-editor and open the routes submenu in each bridge. Click both the options there for all the IoT or restricted bridges; leave the primary or private bridge untouched. Then, restart networking and NetworkManager and you should only see the default route for the private subnet/lan. Here is what that looks like: | ||
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| nmcli connection modify br3 ipv4.never-default yes ipv6.never-default yes | nmcli connection modify br3 ipv4.never-default yes ipv6.never-default yes | ||
| - | Just adapt this command to whatever your bridges are named. This final change took care of the most stubborn machine I had. Another issue I had on this same stubborn machine was that in the nm-connection-editor, | + | Just adapt this command to whatever your bridges are named. This final change took care of the most stubborn machine I had. |
| - | --- // | + | === Update to the Update === |
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| + | As it turns out, the above commands were not the fix. The issue was in fact due to phantom route entries that Network Manager populated. In nm-connection-editor > bridges > ipv4 > routes, there were invalid ipv4 entries. After deleting those bogus entries and restarting both services, the phantom routes did not return. In short, make sure there are no entries other than ones you've created in that location! I have no idea where those came from and they were not on every box I updated. | ||
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| + | --- // | ||
computing/dhcpcd.1788807839.txt.gz · Last modified: by oemb1905
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