#33170 [Bgs->Csd]: IPv6: gethostbyname() fails on resolving IPv6 hostnames

ID: 33170 Updated by: joey@php.net Reported By: web at vollbrecht dot net -Status: Bogus +Status: Closed -Bug Type: Network related +Bug Type: Documentation problem Operating System: Linux 2.6.10-1 PHP Version: 4.3.10 New Comment: This bug has been fixed in CVS. Snapshots of the sources are packaged every three hours; this change will be in the next snapshot. You can grab the snapshot at http://snaps.php.net/. Thank you for the report, and for helping us make PHP better. gethostbyname and gethostbynamel are now documented as giving the "IPv4 address" Previous Comments: ------------------------------------------------------------------------ [2005-05-28 20:16:28] wez@php.net gethostbyname() is an IPv4 only function. inet_pton and inet_ntop are possible alternatives that are available in PHP 5. ------------------------------------------------------------------------ [2005-05-28 13:25:15] web at vollbrecht dot net Description: ------------ perhaps related to #12678. gethostbyname() gives the IPv6 hostname back instead if the IPv6 ip. In IPv4 everything works fine. Note: IPs and hostnames in the following snipplets are replaced with example entries. It was tested with working IPs both in IPv4 and IPv6. Reproduce code: --------------- $client_ip = $_SERVER["REMOTE_ADDR"]; $client_hostname = gethostbyaddr($_SERVER["REMOTE_ADDR"]); $client_hostname2ip = gethostbyname(gethostbyaddr($_SERVER["REMOTE_ADDR"])); echo $client_ip."->".$client_hostname."->".$client_hostname2ip; Expected result: ---------------- In IPv4: 10.11.12.13->server.domain.de->10.11.12.13 In IPv6: 3ffe:1::1->server.ipv6.domain.de->3ffe:1::1 Actual result: -------------- In IPv4 (working fine): 10.11.12.13->server.domain.de->10.11.12.13 In IPv6 (last output broken): 3ffe:1::1->server.ipv6.domain.de->server.ipv6.domain.de ------------------------------------------------------------------------ -- Edit this bug report at http://bugs.php.net/?id=33170&edit=1