Noob in networking , pi hole removing screwed my server, ipv4 problem, totally lost help plz? Update info

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Sorry for maybe a too easy question but after removing pi hole from my server, i can't ping anything ipv4. I can ping 127.0.0.1, my server ip, google.com, its ipv6 addess but not my gateway or any ipv4 address. I've read a lot of thing but honestly, i'm lost. Help :) Os : Ubuntu 24.04.4 Pihole was in docker compose Server is local at home nothing in cloud I didn't made any changes in my router (…

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