Hello,
here is a patch that transforms "valid lifetime" and "prefered lifetime"
in a prefix option (in RA)
in human readable format. Following the RFC2461 Section 4.6.2, if the
value is 0xffffffff, this means lifetime
is infinity.
Regards,
Nicolas
--- wireshark-0.99.4-SVN-19424-orig/epan/dissectors/packet-icmpv6.c 2006-10-04 09:32:25.000000000 +0200
+++ wireshark-0.99.4-SVN-19424/epan/dissectors/packet-icmpv6.c 2006-10-31 12:31:40.000000000 +0100
@@ -8,6 +8,7 @@
* Copyright 1998 Gerald Combs
*
* MobileIPv6 support added by Tomislav Borosa <tomislav.borosa@xxxxxxxxxx>
+ * Copyright 2006, Nicolas DICHTEL - 6WIND - <nicolas.dichtel@xxxxxxxxx>
*
* HMIPv6 support added by Martti Kuparinen <martti.kuparinen@xxxxxx>
*
@@ -315,14 +316,24 @@ again:
decode_boolean_bitfield(pi->nd_opt_pi_flags_reserved,
ND_OPT_PI_FLAG_SITEPREF, 8,
"Site prefix", "Not site prefix"));
- proto_tree_add_text(icmp6opt_tree, tvb,
- offset + offsetof(struct nd_opt_prefix_info, nd_opt_pi_valid_time),
- 4, "Valid lifetime: 0x%08x",
- pntohl(&pi->nd_opt_pi_valid_time));
- proto_tree_add_text(icmp6opt_tree, tvb,
- offset + offsetof(struct nd_opt_prefix_info, nd_opt_pi_preferred_time),
- 4, "Preferred lifetime: 0x%08x",
- pntohl(&pi->nd_opt_pi_preferred_time));
+ if (pntohl(&pi->nd_opt_pi_valid_time) == 0xffffffff)
+ proto_tree_add_text(icmp6opt_tree, tvb,
+ offset + offsetof(struct nd_opt_prefix_info, nd_opt_pi_valid_time),
+ 4, "Valid lifetime: infinity");
+ else
+ proto_tree_add_text(icmp6opt_tree, tvb,
+ offset + offsetof(struct nd_opt_prefix_info, nd_opt_pi_valid_time),
+ 4, "Valid lifetime: %u",
+ pntohl(&pi->nd_opt_pi_valid_time));
+ if (pntohl(&pi->nd_opt_pi_preferred_time) == 0xffffffff)
+ proto_tree_add_text(icmp6opt_tree, tvb,
+ offset + offsetof(struct nd_opt_prefix_info, nd_opt_pi_preferred_time),
+ 4, "Preferred lifetime: infinity");
+ else
+ proto_tree_add_text(icmp6opt_tree, tvb,
+ offset + offsetof(struct nd_opt_prefix_info, nd_opt_pi_preferred_time),
+ 4, "Preferred lifetime: %u",
+ pntohl(&pi->nd_opt_pi_preferred_time));
proto_tree_add_text(icmp6opt_tree, tvb,
offset + offsetof(struct nd_opt_prefix_info, nd_opt_pi_prefix),
16, "Prefix: %s", ip6_to_str(&pi->nd_opt_pi_prefix));
