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Code Issues Releases Wiki Activity

Update comment to explain absence of adjustment to g-bit.

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This commit is contained in:
David Hankins
2009-05-18 22:50:33 +00:00
parent a9b832a756
commit 53883ced69
1 changed files with 6 additions and 1 deletions
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7
server/mdb6.c
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@@ -636,7 +636,12 @@ build_address6(struct in6_addr *addr,
case 6: str[i] = (str[i] & 0x03) | (net_str[i] & 0xFC); break; case 6: str[i] = (str[i] & 0x03) | (net_str[i] & 0xFC); break;
case 7: str[i] = (str[i] & 0x01) | (net_str[i] & 0xFE); 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) if (net_bits == 64)
str[8] &= ~0x02; str[8] &= ~0x02;
} }