diff --git a/engine/src/ast/field_expr.rs b/engine/src/ast/field_expr.rs
index 88e1061e..298a7c05 100644
--- a/engine/src/ast/field_expr.rs
+++ b/engine/src/ast/field_expr.rs
@@ -1085,6 +1085,12 @@ mod tests {
 
     #[test]
     fn test_ip_compare() {
+        assert!(
+            FilterParser::new(&SCHEME)
+                .lex_as::<ComparisonExpr>("ip.addr == 10.10.10.10")
+                .is_ok()
+        );
+
         let expr = assert_ok!(
             FilterParser::new(&SCHEME).lex_as("ip.addr <= 10:20:30:40:50:60:70:80"),
             ComparisonExpr {
@@ -1138,6 +1144,18 @@ mod tests {
 
     #[test]
     fn test_bytes_compare() {
+        assert_err!(
+            FilterParser::new(&SCHEME).lex_as::<ComparisonExpr>("http.host == 10.10.10.10"),
+            LexErrorKind::ExpectedName("byte separator"),
+            "."
+        );
+
+        assert!(
+            FilterParser::new(&SCHEME)
+                .lex_as::<ComparisonExpr>(r#"http.host == "10.10.10.10""#)
+                .is_ok()
+        );
+
         // just check that parsing doesn't conflict with IPv6
         {
             let expr = assert_ok!(
diff --git a/engine/src/rhs_types/bytes.rs b/engine/src/rhs_types/bytes.rs
index 45e51b59..a83b8f18 100644
--- a/engine/src/rhs_types/bytes.rs
+++ b/engine/src/rhs_types/bytes.rs
@@ -178,7 +178,6 @@ fn write_char(vec: &mut Vec<u8>, c: char) {
 enum ByteSeparator {
     Colon,
     Dash,
-    Dot,
 }
 
 impl Lex<'_> for ByteSeparator {
@@ -187,7 +186,6 @@ impl Lex<'_> for ByteSeparator {
         match sep {
             ":" => Ok((ByteSeparator::Colon, rest)),
             "-" => Ok((ByteSeparator::Dash, rest)),
-            "." => Ok((ByteSeparator::Dot, rest)),
             _ => Err((LexErrorKind::ExpectedName("byte separator"), sep)),
         }
     }
@@ -345,11 +343,17 @@ mod test {
     #[test]
     fn test() {
         assert_ok!(
-            BytesExpr::lex("01:2e:f3-77.12;"),
+            BytesExpr::lex("01:2e:f3-77:12;"),
             BytesExpr::from(vec![0x01, 0x2E, 0xF3, 0x77, 0x12]),
             ";"
         );
 
+        assert_err!(
+            BytesExpr::lex("10.10.10.10"),
+            LexErrorKind::ExpectedName("byte separator"),
+            "."
+        );
+
         assert_ok!(
             BytesExpr::lex(r#""s\\t\"r\x0A\000t""#),
             BytesExpr::from("s\\t\"r\n\0t".to_owned())