diff --git a/pkgs/tools/networking/dibbler/default.nix b/pkgs/tools/networking/dibbler/default.nix
index 4175de2e23c..b6e5229a2f2 100644
--- a/pkgs/tools/networking/dibbler/default.nix
+++ b/pkgs/tools/networking/dibbler/default.nix
@@ -13,7 +13,11 @@ stdenv.mkDerivation rec {
     "--enable-resolvconf"
   ];
 
-  NIX_CFLAGS_COMPILE = lib.optionalString stdenv.isDarwin "-D__APPLE_USE_RFC_2292=1";
+  # -fcommon: Workaround build failure on -fno-common toolchains like upstream
+  # gcc-10. Otherwise build fails as:
+  #   ld: ./Port-linux/libLowLevel.a(libLowLevel_a-interface.o):(.bss+0x4): multiple definition of `interface_auto_up';
+  #     ./Port-linux/libLowLevel.a(libLowLevel_a-lowlevel-linux-link-state.o):(.bss+0x74): first defined here
+  NIX_CFLAGS_COMPILE = lib.optionalString stdenv.isDarwin "-D__APPLE_USE_RFC_2292=1" + " -fcommon";
 
   meta = with lib; {
     description = "Portable DHCPv6 implementation";