From: Francois-Xavier Le Bail <devel.fx.lebail@orange.fr>
Date: Sun, 3 Jul 2022 14:05:38 +0000 (+0200)
Subject: PPP: Don't process further if protocol is unknown (-e option)
X-Git-Url: https://git.tcpdump.org/tcpdump/commitdiff_plain/12cded832955715210bcfc4aebbdc70ad366bf97

PPP: Don't process further if protocol is unknown (-e option)
---

diff --git a/print-ppp.c b/print-ppp.c
index 8e63b4a1..aba243dd 100644
--- a/print-ppp.c
+++ b/print-ppp.c
@@ -1570,11 +1570,18 @@ ppp_print(netdissect_options *ndo,
 		hdr_len += 2;
 	}
 
-	if (ndo->ndo_eflag)
-		ND_PRINT("%s (0x%04x), length %u: ",
-		          tok2str(ppptype2str, "unknown", proto),
+	if (ndo->ndo_eflag) {
+		const char *typestr;
+		typestr = tok2str(ppptype2str, "unknown", proto);
+		ND_PRINT("%s (0x%04x), length %u",
+		          typestr,
 		          proto,
 		          olen);
+		if (*typestr == 'u')	/* "unknown" */
+			return hdr_len;
+
+		ND_PRINT(": ");
+	}
 
 	handle_ppp(ndo, proto, p, length);
 	return (hdr_len);