From: Francois-Xavier Le Bail <devel.fx.lebail@orange.fr>
Date: Tue, 18 Apr 2023 15:50:30 +0000 (+0200)
Subject: RT6: Print SRH TLV HMAC "reserved" field if non zero in verbose mode
X-Git-Url: https://git.tcpdump.org/tcpdump/commitdiff_plain/89b68e1a5fe131951858d7bcf71587ad7fa25846?hp=c7fd6445c6c4c1b36183bc043a06a5e17237c49f

RT6: Print SRH TLV HMAC "reserved" field if non zero in verbose mode

reserved: MUST be 0 (MBZ).
---

diff --git a/print-rt6.c b/print-rt6.c
index 0478f382..fe0e8575 100644
--- a/print-rt6.c
+++ b/print-rt6.c
@@ -79,6 +79,8 @@ srh_tlv_print(netdissect_options *ndo, const u_char *p, u_int bytes_left)
 			p += 2;
 			if (ndo->ndo_vflag)
 				ND_PRINT(", D=%u", reserved >> 15);
+			if (ndo->ndo_vflag && (reserved & 0x7fff) != 0)
+				ND_PRINT(", reserved MBZ %u", reserved & 0x7fff);
 			key_id = GET_BE_U_4(p);
 			p += 4;
 			if (ndo->ndo_vflag)