No response to my DNS queries and icmp

[luksz sz]

Hi,

after experiencing  ddos dns amplification attack, 8.8.8.8 and 8.8.4.4 seem to deny our dns queries (udp).

$ dig -t TXT test.dns.google.com. '@dns.google.'

; <<>> DiG 9.10.3-P4-Ubuntu <<>> -t TXT test.dns.google.com. @dns.google.
;; global options: +cmd
;; connection timed out; no servers could be reached

#mtr 8.8.8.8 --report -c 5 -n
Start: Mon Feb  3 18:38:27 2025
HOST:                   Loss%   Snt   Last   Avg  Best  Wrst StDev
  1.|-- 212.14.52.81               0.0%     5    0.3   0.3   0.2   0.3   0.0
  2.|-- 213.155.191.254            0.0%     5    0.4   0.3   0.2   0.5   0.0
  3.|-- 89.46.144.185              0.0%     5    8.4   9.6   8.4  14.4   2.5
  4.|-- 142.251.253.223            0.0%     5    9.3   9.4   9.3   9.8   0.0
  5.|-- 108.170.234.103            0.0%     5    9.4   9.3   9.1   9.5   0.0
  6.|-- ???                       100.0     5    0.0   0.0   0.0   0.0   0.0

# /usr/sbin/traceroute -n -w 2 -m 30 dns.google
traceroute to dns.google (8.8.8.8), 30 hops max, 60 byte packets
 1  212.14.52.81  0.255 ms  0.265 ms  0.259 ms
 2  213.155.191.254  0.325 ms  0.326 ms  0.329 ms
 3  89.46.144.185  8.371 ms  8.368 ms  8.351 ms
 4  142.251.253.223  9.309 ms 192.178.99.191  8.435 ms 142.251.253.223  9.367 ms
 5  142.250.239.81  8.655 ms 72.14.237.17  8.534 ms 142.250.239.81  8.636 ms
 6  8.8.8.8  8.455 ms  8.515 ms  8.474 ms

Page https://dns.google/ work correctly.