iproute2: fix static build

This is needed for nixos-anywhere

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

@@ -46,7 +46,9 @@ stdenv.mkDerivation rec {
 
   depsBuildBuild = [ buildPackages.stdenv.cc ]; # netem requires $HOSTCC
   nativeBuildInputs = [ bison flex pkg-config ];
-  buildInputs = [ db iptables elfutils libmnl ];
+  buildInputs = [ db iptables libmnl ]
+    # needed to uploaded bpf programs
+    ++ lib.optionals (!stdenv.hostPlatform.isStatic) [ elfutils ];
 
   enableParallelBuilding = true;