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author | David Hankins <dhankins@isc.org> | 2009-05-18 22:50:33 +0000 |
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committer | David Hankins <dhankins@isc.org> | 2009-05-18 22:50:33 +0000 |
commit | 53883ced69aa6e1dd16076f09de7dd1fd0d610c7 (patch) | |
tree | a0266a44550eb85bc8fcf93ce1438606fe5e7279 /server/mdb6.c | |
parent | a9b832a756905c1cae5b1d7f59ca273011c10086 (diff) | |
download | isc-dhcp-53883ced69aa6e1dd16076f09de7dd1fd0d610c7.tar.gz |
Update comment to explain absence of adjustment to g-bit.
Diffstat (limited to 'server/mdb6.c')
-rw-r--r-- | server/mdb6.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/server/mdb6.c b/server/mdb6.c index a5ae4eb7..73b7fdfa 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; } |