man: replace perl bug tracker link that went away with link to paper

Fixes: #16245

diff --git a/docs/RANDOM_SEEDS.md b/docs/RANDOM_SEEDS.md
index d3b68e967aa09d85c42633eca23cf8770610f10e..c1735b1ac9e138ee4cd4785bc94620b270f180c8 100644 (file)
--- a/docs/RANDOM_SEEDS.md
+++ b/docs/RANDOM_SEEDS.md
@@ -118,7 +118,7 @@ requires random numbers as well, including for the following uses:
 
 * systemd maintains various hash tables internally. In order to harden them
   against [collision
-  attacks](https://rt.perl.org/Public/Bug/Display.html?CSRF_Token=165691af9ddaa95f653402f1b68de728)
+  attacks](https://www.cs.auckland.ac.nz/~mcw/Teaching/refs/misc/denial-of-service.pdf)
   they are seeded with random numbers.
 
 * At various places systemd needs random bytes for temporary file name