Summary
The remote host is missing an update to quagga
announced via advisory DSA 2459-2.
Solution
https://secure1.securityspace.com/smysecure/catid.html?in=DSA%202459-2
Insight
The recent quagga update, DSA-2459-1, introduced a memory leak in the bgpd process in some configurations.
For the stable distribution (squeeze), this problem has been fixed in version 0.99.20.1-0+squeeze2.
We recommend that you upgrade your quagga packages.