As stated in the title. I have queue manager with IPADDR configured as (IPV4). However any time I start listener on that queue manager it listens trough TCP6.
WebSphere Version: 7.5
3
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1 Answers
3
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Please note the documentation on the Migrating a queue manager to IPv6 page which states that:
The preferred IP version that two systems use for communicating (if both IPv4 and IPv6 are available) is determined by a new queue manager attribute IPADDRV. This parameter only has an effect if the hostname resolves ambiguously to both an IPv4 address and an IPv6 address.
(Emphasis added.) Note that a parameter whose effect depends on resolving a DNS name would apply mainly to outbound connections.
What you want is the IPADDR parameter of the DEFINE LISTENER command which states:
IP address for the listener specified in IPv4 dotted decimal, IPv6 hexadecimal notation, or alphanumeric host name form. If you do not specify a value for this parameter, the listener listens on all configured IPv4 and IPv6 stacks.
This is the exception to the IPADDRV guidance about name resolution applying to outbound connections. If you put a DNS name in the IPADDR of the listener, then the listener will use whichever IP version address to which that name resolves, or if it resolves to both IPV4 and IPV6 will take the version set in IPADDRV.
Since you report IPADDRV as having no effect then the listener is either bound to an IPV6 address or DNS name, or else the listener is not bound to any particular address and is listening promiscuously on all interfaces.
