The policy for selecting the source IP address.
outgoingInterface - the IP address of outgoing
interface should be used as
the source. This is the
default behavior if no other
policy is configured.
configuredIpAddr - the specific IP address
configured on one of the
switch's IP interfaces
(VLAN or loopback) should be
used as the source.
configuredInterface - an IP address configured on
the specified IP interface
(VLAN or loopback) should be
used as the source.
In case of multi-netted interface
the lexicographically lowest IP
address will be used.