Since most people are not having this problem, Liliang, it's a reasonable assumption that it is more related to your setup and internet connectivity circumstances than to Ryzom itself.
However, it may also be the case that in your setup some interaction of Ryzom client causes loss of DNS, though I am confused a little bit by your description of the problem. Ryzom.com is not a DNS server, but a host for the game software (and the app.ryzom.com... etc.) Your DNS server is much closer to you than to ryzom.com, and the machines at that URL could not possibly interfere with your access to your bank, shopping channel or whatever.
I hope that you also filed a ticket or emailed support with a full description of the problem and your solution to it. If there is a low-probability bug, it is still a bug and needs to be fixed.
However, it may also be the case that in your setup some interaction of Ryzom client causes loss of DNS, though I am confused a little bit by your description of the problem. Ryzom.com is not a DNS server, but a host for the game software (and the app.ryzom.com... etc.) Your DNS server is much closer to you than to ryzom.com, and the machines at that URL could not possibly interfere with your access to your bank, shopping channel or whatever.
I hope that you also filed a ticket or emailed support with a full description of the problem and your solution to it. If there is a low-probability bug, it is still a bug and needs to be fixed.
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Remembering Tyneetryk
Phaedreas Tears - 15 years old and first(*) of true neutral guilds in Atys.
(*) This statement is contested, but we are certainly the longest lasting.
<clowns | me & you | jokers>