From 53883ced69aa6e1dd16076f09de7dd1fd0d610c7 Mon Sep 17 00:00:00 2001 From: David Hankins Date: Mon, 18 May 2009 22:50:33 +0000 Subject: [PATCH] Update comment to explain absence of adjustment to g-bit. --- server/mdb6.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) diff --git a/server/mdb6.c b/server/mdb6.c index a5ae4eb73..73b7fdfa8 100644 --- a/server/mdb6.c +++ b/server/mdb6.c @@ -636,7 +636,12 @@ build_address6(struct in6_addr *addr, case 6: str[i] = (str[i] & 0x03) | (net_str[i] & 0xFC); break; case 7: str[i] = (str[i] & 0x01) | (net_str[i] & 0xFE); break; } - /* set the 'u' bit to zero for /64s. */ + + /* + * Set the universal/local bit ("u bit") to zero for /64s. The + * individual/group bit ("g bit") is unchanged, because the g-bit + * has no meaning when the u-bit is cleared. + */ if (net_bits == 64) str[8] &= ~0x02; } -- 2.47.3