11-23-2006
Problem with name resolution?
I have an AIX4.3 box on our subnet, called LIMEST3.OURDOMAIN.CO.UK, with IP address 10.103.1.13
It has the following entry in its own /etc/hosts:
10.103.1.13 limest3 limest3.ourdomain.co.uk
Now, if I ping limest3.ourdomain.co.uk or ping 10.103.1.13, the result is instant. However if I ping limest3 it can take up to 30 seconds (I have verified that with 'time host').
No other AIX box on our subnet has this problem; pinging limest3 from another box is instant.
It may seem trivial, but I'm guessing it might have something to do with the sudden increase in time it takes to connect to our Oracle8i database (about 30 seconds).
A clue (perhaps): when we have lost internet access, the Oracle connection time shoots up to about 30s, and back down to near-instant when internet access is restored (the default gateway IS properly configured).
Any help would be very much appreciated.
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LEARN ABOUT DEBIAN
ipsec_sameaddr
IPSEC_SAMEADDR(3) Library Functions Manual IPSEC_SAMEADDR(3)
NAME
ipsec_sameaddr, ipsec_addrcmp, ipsec_samesubnet, ipsec_addrinsubnet, ipsec_subnetinsubnet, ipsec_subnetishost, ipsec_samesaid,
ipsec_sameaddrtype, ipsec_samesubnettype - do comparisons for addresses, subnets, SA IDs and address families
SYNOPSIS
#include <freeswan.h>
int sameaddr(const ip_address *a, const ip_address *b);
int addrcmp(const ip_address *a, const ip_address *b);
int samesubnet(const ip_subnet *a, const ip_subnet *b);
int addrinsubnet(const ip_address *a, const ip_subnet *s);
int subnetinsubnet(const ip_subnet *a, const ip_subnet *b);
int subnetishost(const ip_subnet *s);
int samesaid(const ip_said *a, const ip_said *b);
int sameaddrtype(const ip_address *a, const ip_address *b);
int samesubnettype(const ip_subnet *a, const ip_subnet *b);
DESCRIPTION
These functions do various comparisons and tests on the ip_address type and ip_subnet types.
Sameaddr returns non-zero if addresses a and b are identical, and 0 otherwise. Addresses of different families are never identical.
Addrcmp returns -1, 0, or 1 respectively if address a is less than, equal to, or greater than b. If they are not of the same address fam-
ily, they are never equal; the ordering reported in this case is arbitrary (and probably not useful) but consistent.
Samesubnet returns non-zero if subnets a and b are identical, and 0 otherwise. Subnets of different address families are never identical.
Addrinsubnet returns non-zero if address a is within subnet s and 0 otherwise. An address is never within a subnet of a different address
family.
Subnetinsubnet returns non-zero if subnet a is a subset of subnet b and 0 otherwise. A subnet is deemed to be a subset of itself. A sub-
net is never a subset of another subnet if their address families differ.
Subnetishost returns non-zero if subnet s is in fact only a single host, and 0 otherwise.
Samesaid returns non-zero if SA IDs a and b are identical, and 0 otherwise.
Sameaddrtype returns non-zero if addresses a and b are of the same address family, and 0 otherwise.
Samesubnettype returns non-zero if subnets a and b are of the same address family, and 0 otherwise.
SEE ALSO
inet(3), ipsec_initaddr(3)
HISTORY
Written for the FreeS/WAN project by Henry Spencer.
28 Nov 2000 IPSEC_SAMEADDR(3)