--- src/RtConfig/command.l.old	2006-06-08 16:16:26.000000000 +0100
+++ src/RtConfig/command.l	2009-03-16 15:31:47.000000000 +0000
@@ -57,6 +57,8 @@
 %x USEFUL_LINE
 %x USELESS_LINE
 
+INT            [[:digit:]]+
+ASNO           [Aa][Ss]{INT}(\.{INT}){0,1}
 DNAME          [[:alnum:]_-]+
 QUAD           [0-9A-F]{1,4}
 IPV6           {QUAD}(:{QUAD}){7}
@@ -205,8 +207,12 @@
 }
 
 
-<USEFUL_LINE>[Aa][Ss][0-9]+ {
-   yylval.as = atoi(yytext+2);
+<USEFUL_LINE>{ASNO} {
+   const char *dot = strchr(yytext,'.');
+   if (dot)
+     yylval.as = atoi(yytext+2)<<16 | atoi(dot+1);
+   else 
+     yylval.as = atoi(yytext+2);
    LEXER_RETURN(TKN_ASNUM);
 }