diff --git a/conf/cf-lex.l b/conf/cf-lex.l
index 2f95f2e1..637a5d38 100644
--- a/conf/cf-lex.l
+++ b/conf/cf-lex.l
@@ -680,7 +680,7 @@ cf_lex_symbol(const char *data)
       int val = sym->keyword->value;
       if (val > 0) return val;
       cf_lval.i = -val;
-      return ENUM;
+      return ENUM_TOKEN;
     }
     case SYM_METHOD:
       return (sym->method->arg_num > 1) ? CF_SYM_METHOD_ARGS : CF_SYM_METHOD_BARE;
diff --git a/conf/confbase.Y b/conf/confbase.Y
index cdbdf1ce..1011a57c 100644
--- a/conf/confbase.Y
+++ b/conf/confbase.Y
@@ -105,7 +105,7 @@ CF_DECLS
 %token END CLI_MARKER INVALID_TOKEN ELSECOL DDOT
 %token GEQ LEQ NEQ AND OR IMP
 %token PO PC
-%token <i> NUM ENUM
+%token <i> NUM ENUM_TOKEN
 %token <ip4> IP4
 %token <ip6> IP6
 %token <i64> VPN_RD
diff --git a/conf/gen_keywords.m4 b/conf/gen_keywords.m4
index 4e8651f6..e81589dc 100644
--- a/conf/gen_keywords.m4
+++ b/conf/gen_keywords.m4
@@ -35,10 +35,11 @@ m4_define(CF_CLI, `CF_KEYWORDS(m4_translit($1, [[ ]], [[,]]))
 
 # Enums are translated to C initializers: use CF_ENUM(typename, prefix, values)
 # For different prefix: CF_ENUM_PX(typename, external prefix, C prefix, values)
+# The typename is converted to a keyword by removing T_ENUM_ prefix
 m4_define(CF_enum, `m4_divert(1){ "CF_enum_prefix_ext[[]]$1", -((CF_enum_type<<16) | CF_enum_prefix_int[[]]$1) },
 m4_divert(-1)')
-m4_define(CF_ENUM, `m4_define([[CF_enum_type]],$1)m4_define([[CF_enum_prefix_ext]],$2)m4_define([[CF_enum_prefix_int]],$2)CF_iterate([[CF_enum]], [[m4_shift(m4_shift($@))]])DNL')
-m4_define(CF_ENUM_PX, `m4_define([[CF_enum_type]],$1)m4_define([[CF_enum_prefix_ext]],$2)m4_define([[CF_enum_prefix_int]],$3)CF_iterate([[CF_enum]], [[m4_shift(m4_shift(m4_shift($@)))]])DNL')
+m4_define(CF_ENUM, `CF_keywd(m4_substr($1, 7))m4_define([[CF_enum_type]],$1)m4_define([[CF_enum_prefix_ext]],$2)m4_define([[CF_enum_prefix_int]],$2)CF_iterate([[CF_enum]], [[m4_shift(m4_shift($@))]])DNL')
+m4_define(CF_ENUM_PX, `CF_keywd(m4_substr($1, 7))m4_define([[CF_enum_type]],$1)m4_define([[CF_enum_prefix_ext]],$2)m4_define([[CF_enum_prefix_int]],$3)CF_iterate([[CF_enum]], [[m4_shift(m4_shift(m4_shift($@)))]])DNL')
 
 # After all configuration templates end, we generate the 
 m4_m4wrap(`
diff --git a/conf/gen_parser.m4 b/conf/gen_parser.m4
index 48c2ca50..e41eb7f7 100644
--- a/conf/gen_parser.m4
+++ b/conf/gen_parser.m4
@@ -52,8 +52,10 @@ m4_define(CF_CLI_OPT, `')
 m4_define(CF_CLI_HELP, `')
 
 # ENUM declarations are ignored
-m4_define(CF_ENUM, `')
-m4_define(CF_ENUM_PX, `')
+m4_define(CF_token, `m4_ifdef([[CF_tok_$1]],,[[m4_define([[CF_tok_$1]],1)%token<s> $1]])')
+m4_define(CF_enum, `CF_append([[CF_enum_type]],[[$1 { $$ = $2; }]],[[ | ]])CF_token($1)')
+m4_define(CF_ENUM,    `CF_enum(m4_substr($1, 7), $1)')
+m4_define(CF_ENUM_PX, `CF_enum(m4_substr($1, 7), $1)')
 
 # After all configuration templates end, we finally generate the grammar file.
 m4_m4wrap(`
@@ -65,9 +67,11 @@ m4_undivert(1)DNL
 m4_undivert(2)DNL
 
 %type <s> KEYWORD
+%type <i> enum_type
 
 %%
 KEYWORD: CF_kw_rule;
+enum_type: CF_enum_type;
 
 m4_undivert(3)DNL
 
diff --git a/filter/config.Y b/filter/config.Y
index d656a726..3b4d669f 100644
--- a/filter/config.Y
+++ b/filter/config.Y
@@ -357,7 +357,7 @@ CF_DECLS
 CF_KEYWORDS_EXCLUSIVE(IN)
 CF_KEYWORDS(FUNCTION, PRINT, PRINTN, UNSET, RETURN,
 	ACCEPT, REJECT, ERROR,
-	INT, BOOL, IP, PREFIX, RD, PAIR, QUAD, EC, LC,
+	INT, BOOL, IP, PREFIX, RD, PAIR, QUAD, EC, LC, ENUM,
 	SET, STRING, BYTESTRING, BGPMASK, BGPPATH, CLIST, ECLIST, LCLIST,
 	IF, THEN, ELSE, CASE,
 	FOR, DO,
@@ -473,6 +473,7 @@ type:
 	  case T_INT:
 	  case T_PAIR:
 	  case T_QUAD:
+	  case T_ENUM:
 	  case T_EC:
 	  case T_LC:
 	  case T_RD:
@@ -488,6 +489,7 @@ type:
 		cf_error( "You can't create sets of this type." );
 	}
    }
+ | ENUM enum_type { $$ = $2; };
  ;
 
 function_argsn:
@@ -640,7 +642,7 @@ set_atom0:
    NUM    { $$.type = T_INT; $$.val.i = $1; }
  | fipa   { $$ = $1; }
  | VPN_RD { $$.type = T_RD; $$.val.ec = $1; }
- | ENUM   { $$.type = pair_a($1); $$.val.i = pair_b($1); }
+ | ENUM_TOKEN { $$.type = pair_a($1); $$.val.i = pair_b($1); }
  | '(' term ')' {
      $$ = cf_eval($2, T_VOID);
      if (!f_valid_set_type($$.type))
@@ -808,7 +810,7 @@ constant:
      DBG( "ook\n" );
  }
  | '[' fprefix_set ']' { $$ = f_new_inst(FI_CONSTANT, (struct f_val) { .type = T_PREFIX_SET, .val.ti = $2, }); }
- | ENUM	  { $$ = f_new_inst(FI_CONSTANT, (struct f_val) { .type = $1 >> 16, .val.i = $1 & 0xffff, }); }
+ | ENUM_TOKEN { $$ = f_new_inst(FI_CONSTANT, (struct f_val) { .type = $1 >> 16, .val.i = $1 & 0xffff, }); }
  ;
 
 constructor:
diff --git a/filter/data.c b/filter/data.c
index 282206eb..10084448 100644
--- a/filter/data.c
+++ b/filter/data.c
@@ -44,6 +44,7 @@ static const char * const f_type_str[] = {
   [T_ENUM_NETTYPE] = "enum nettype",
   [T_ENUM_RA_PREFERENCE] = "enum ra_preference",
   [T_ENUM_AF]	= "enum af",
+  [T_ENUM_MPLS_POLICY] = "enum mpls_policy",
 
   [T_IP]	= "ip",
   [T_NET]	= "prefix",
diff --git a/filter/test.conf b/filter/test.conf
index 0361a1c9..c27c04ed 100644
--- a/filter/test.conf
+++ b/filter/test.conf
@@ -471,12 +471,31 @@ bt_test_suite(t_ip_set, "Testing sets of ip address");
 
 function t_enum()
 {
+	enum rts ev0 = RTS_STATIC;
+	enum rtd ev1 = RTD_UNICAST;
+	enum scope ev2 = SCOPE_UNIVERSE;
+	enum roa ev3 = ROA_VALID;
+	enum aspa ev4 = ASPA_VALID;
+	enum af ev5 = AF_IPV6;
+	enum nettype ev6 = NET_IP6;
+	enum bgp_origin ev7 = ORIGIN_IGP;
+	enum ra_preference ev8 = RA_PREF_LOW;
+	enum mpls_policy ev9 = MPLS_POLICY_STATIC;
+
+	enum nettype set es = [NET_IP6, NET_VPN6];
+
 	bt_assert(format(RTS_STATIC) = "(enum 30)1");
 	bt_assert(format(NET_IP4) = "(enum 36)1");
 	bt_assert(format(NET_VPN6) = "(enum 36)4");
+	bt_assert(format(ev6) = "(enum 36)2");
+
+	bt_assert(ev0 = RTS_STATIC);
+	bt_assert(ev6 = NET_IP6);
 
 	bt_assert(RTS_STATIC ~ [RTS_STATIC, RTS_DEVICE]);
 	bt_assert(RTS_BGP !~ [RTS_STATIC, RTS_DEVICE]);
+	bt_assert(NET_IP6  ~ es);
+	bt_assert(NET_IP4 !~ es);
 }
 
 bt_test_suite(t_enum, "Testing enums");
diff --git a/nest/config.Y b/nest/config.Y
index 6b89f5d8..118c112e 100644
--- a/nest/config.Y
+++ b/nest/config.Y
@@ -132,6 +132,7 @@ CF_KEYWORDS(ASPA_PROVIDERS)
 /* For r_args_channel */
 CF_KEYWORDS(IPV4, IPV4_MC, IPV4_MPLS, IPV6, IPV6_MC, IPV6_MPLS, IPV6_SADR, VPN4, VPN4_MC, VPN4_MPLS, VPN6, VPN6_MC, VPN6_MPLS, ROA4, ROA6, FLOW4, FLOW6, MPLS, PRI, SEC, ASPA)
 
+CF_ENUM(T_ENUM_NETTYPE, NET_, IP4, IP6, VPN4, VPN6, ROA4, ROA6, FLOW4, FLOW6, IP6_SADR, MPLS, ASPA)
 CF_ENUM(T_ENUM_RTS, RTS_, STATIC, INHERIT, DEVICE, STATIC_DEVICE, REDIRECT,
 	RIP, OSPF, OSPF_IA, OSPF_EXT1, OSPF_EXT2, BGP, PIPE, BABEL, RPKI, L3VPN,
 	AGGREGATED)
@@ -211,8 +212,6 @@ net_type:
  | MPLS { $$ = NET_MPLS; }
  ;
 
-CF_ENUM(T_ENUM_NETTYPE, NET_, IP4, IP6, VPN4, VPN6, ROA4, ROA6, FLOW4, FLOW6, IP6_SADR, MPLS, ASPA)
-
 
 /* Creation of routing tables */