nixos-module/container/bird: don't redistribute bgp into ospf

nix/nixos-module/container/bird.nix

@@ -107,7 +107,7 @@ in
       # OSPFv2 for site-local IPv4
       protocol ospf v2 ZW4 {
         ipv4 {
-          export where net != 0.0.0.0/0;
+          export where net != 0.0.0.0/0 && source != RTS_BGP;
         };
         area 0 {
           ${builtins.concatStringsSep "\n" (
@@ -208,7 +208,7 @@ in
       # OSPFv3 for site-local IPv6
       protocol ospf v3 ZW6 {
         ipv6 {
-          export where net != ::/0;
+          export where net != ::/0 && source != RTS_BGP;
         };
         area 0 {
           ${builtins.concatStringsSep "\n" (