** Description changed:

+ [Impact] 
+ A change included ipset 6.37 as a performance regression as all ip set rule 
incur a getprotocolbyname lookup, irrespective of whether the name of the 
protocol or the actual port number is specified in the set configuration.  For 
large sets this can double the speed of applying changes to ipset tables.
+ 
+ [Test Plan]
+ 
+  * detailed instructions how to reproduce the bug
+ 
+  * these should allow someone who is not familiar with the affected
+    package to reproduce the bug and verify that the updated package fixes
+    the problem.
+ 
+  * if other testing is appropriate to perform before landing this update,
+    this should also be described here.
+ 
+ [Where problems could occur]
+ The original patch to resolve this issue did introduce another bug which as 
subsequently been fixed as well (and is included in the updated packages).
+ 
+ If the fix introduces issues its likely that iptable rules making use of
+ ipset groups will start to fail in some way - probably rejecting traffic
+ or suchlike.
+ 
+ [Other Info]
+ 
+ 
+ [Original Bug Report]
  Hi,
  
  Do you think we could get
  
https://git.netfilter.org/ipset/commit/?id=dbeb20a667e82e4efb8b26b24a0ec641dab5c857
  SRUed to 20.04 ?
  
  This divides our ipset loading time by ~2 (from ~60s to ~25s).
  
  Thanks

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https://bugs.launchpad.net/bugs/1918936

Title:
  ipset does NSS lookups even if ports are numeric

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