iproute2: 5.14.0 -> 5.17.0

5.17.0 changelog: https://lore.kernel.org/netdev/20220323140712.5b593820@hermes.local/
5.16.0 changelog: https://lore.kernel.org/netdev/20220110153223.253e1954@hermes.local/
5.15.0 changelog: https://lore.kernel.org/netdev/20211101164705.6f4f2e41@hermes.local/

While at it added trivial udupdater.

pkgs/os-specific/linux/iproute/default.nix

@@ -1,15 +1,16 @@
 { lib, stdenv, fetchurl, fetchpatch
 , buildPackages, bison, flex, pkg-config
 , db, iptables, libelf, libmnl
+, gitUpdater
 }:
 
 stdenv.mkDerivation rec {
   pname = "iproute2";
-  version = "5.14.0";
+  version = "5.17.0";
 
   src = fetchurl {
     url = "mirror://kernel/linux/utils/net/${pname}/${pname}-${version}.tar.xz";
-    sha256 = "1m4ifnxq7lxnm95l5354z8dk3xj6w9isxmbz53266drgln2sf3r1";
+    sha256 = "bjhPG0LHXhqdqsV4Zto33P+QkJC6huslpudk2niTZg4=";
   };
 
   patches = [
@@ -48,6 +49,13 @@ stdenv.mkDerivation rec {
 
   enableParallelBuilding = true;
 
+  passthru.updateScript = gitUpdater {
+    inherit pname version;
+    # No nicer place to find latest release.
+    url = "https://git.kernel.org/pub/scm/network/iproute2/iproute2.git";
+    rev-prefix = "v";
+  };
+
   meta = with lib; {
     homepage = "https://wiki.linuxfoundation.org/networking/iproute2";
     description = "A collection of utilities for controlling TCP/IP networking and traffic control in Linux";