Am 06.05.22 um 12:24 schrieb Ted Mittelstaedt:
On 5/6/2022 12:45 AM, Reindl Harald wrote:
in the past our CISCO ISP router with "DNS ALG" even rewrote zone
transfers and invented a zero TTL for each and every CNAME it saw
Probably doing that to retaliate for dynamic DNS providers abusing DNS
and people abusing dynamic DNS providers for being cheapskates and
saving a nickle on a real static IP.
You got caught in the crossfire of that particular war
nonsense - it's the cisco default behavior
no ip nat service alg udp dns
no ip nat service alg tcp dns
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