Rouven Czerwinski 7db58b93d0 nixos/tests: use ::1 instead of anycast address (#96250) ...

According to RFC4291[1], 2001:db8:: is the anycast address for the
prefix and will be answered by all routers responsible for this prefix.
This means that before the iputils bump, the ping from client to isp was
answered by the router and not by the ISP machine. Switching away from
the anycast address fixes this issue.

Credits for finding this go to @primeos.

[1]: https://tools.ietf.org/html/rfc4291#section-2.6.1

Fixes #96188

2020-08-25 22:29:22 +02:00

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