Duplicate network address detection

A computer readable medium encoded with software for providing enhanced error information for duplicated addresses in a computer network, said software performing the steps of:

• receiving a plurality of packets encoded according to a first protocol, said packets encapsulating data encoded according to a second protocol;
• extracting a first source address from said packets according to said first protocol;
• determining that said first source address is a substantial duplicate of a known assigned address;
• responsive to determination of said first source address being a duplicate address, extracting a second source address from said encapsulated data according to said second protocol;
• and
• providing said first source address and said second source address to an error log which is reviewable by a system administrator in order to facilitate correction of said duplicate assigned address.

A system for providing enhanced error information for duplicated addresses in a computer network, said system comprising:

• a packet receiver configured to receive a plurality of packets encoded according to a first protocol, said packets encapsulating data encoded according to a second protocol;
• a first protocol analyzer configured to extract a first source address from said packets according to said first protocol;
• a duplicate address detector for determining that said first source address is a substantial duplicate of a known assigned address;
• a second protocol analyzer for extracting a second source address from said encapsulated data according to said second protocol responsive to determination of said first source address being a duplicate address;
• and
• a data logger configured to provide said first source address and said second source address to an error log which is reviewable by a system administrator in order to facilitate correction of said duplicate assigned address.