From: Kevin Darbyshire-Bryant <ldir@darbyshire-bryant.me.uk>
Date: Fri, 5 Dec 2025 20:51:28 +0000 (+0000)
Subject: Revert "dhcpv6-ia: add some noise to the T1 and T2 periods"
X-Git-Url: http://git.openwrt.org/?a=commitdiff_plain;p=project%2Fodhcpd.git

Revert "dhcpv6-ia: add some noise to the T1 and T2 periods"

Accidental push to wrong branch/repo

This reverts commit 81ea5bfef775b8e2d4aae9826e84a040288864df.
---

diff --git a/src/dhcpv6-ia.c b/src/dhcpv6-ia.c
index edd7823..5af952d 100644
--- a/src/dhcpv6-ia.c
+++ b/src/dhcpv6-ia.c
@@ -721,11 +721,8 @@ static size_t build_ia(uint8_t *buf, size_t buflen, uint16_t status,
 			/* UINT32_MAX is RFC defined as infinite lease-time */
 			a->preferred_until = (floor_preferred_lifetime == UINT32_MAX) ? 0 : floor_preferred_lifetime + now;
 
-		/* if there's sufficient time left, subtract a pseudo random 127 seconds from the refresh timers */
-		o_ia.t1 = htonl((floor_preferred_lifetime == UINT32_MAX) ? floor_preferred_liftime : (floor_preferred_liftime > 256) ?
-				floor_preferred_lifetime * 5 / 10 - ((rand() >> 8) & 0x7f) : floor_preferred_lifetime * 5 / 10);
-		o_ia.t2 = htonl((floor_preferred_lifetime == UINT32_MAX) ? floor_preferred_lifetime : (floor_preferred_lifetime > 256) ?
-				floor_preferred_lifetime * 8 / 10 - ((rand() >> 8) & 0x7f) : floor_preferred_lifetime * 8 / 10);
+		o_ia.t1 = htonl((floor_preferred_lifetime == UINT32_MAX) ? floor_preferred_lifetime : floor_preferred_lifetime * 5 / 10);
+		o_ia.t2 = htonl((floor_preferred_lifetime == UINT32_MAX) ? floor_preferred_lifetime : floor_preferred_lifetime * 8 / 10);
 
 		if (!o_ia.t1)
 			o_ia.t1 = htonl(1);