9

Please don't flag this question as a duplicate because I really need your help. I once used OpenDNS in my router to block some websites & now I'm stuck with at whatever I do. I have already removed OpenDNS from my router & tried half of the commands suggested in other question but none of them work for me. Most of the websites which deal with a proxy, adult content etc. are all blocked & I'm requesting for a solution.

guntbert
  • 13,475
Goutam Hebbar
  • 133

2 Answers2

14

This should clear it

# sudo systemd-resolve --flush-cache

You can check with

# sudo systemd-resolve --statistics

  • it should show 0 in Current cache size 

    DNSSEC supported by current servers: no
Transactions
Current Transactions: 0
Total Transactions: 93750

Cache
  Current Cache Size: 0
  Cache Hits: 18686
Cache Misses: 28576

DNSSEC Verdicts
      Secure: 0
    Insecure: 0
       Bogus: 0
Indeterminate: 0
Morgan Cox
  • 141
1

Maybe this version also has two (2) DNS caches, like Ubuntu 20.10.

Please check the full tutorial to flush DNS caches:

https://askubuntu.com/a/1315569/136919

PabloRQ
  • 199