Bug ID 6603974: If you configure more than four virtual networks (vnets) in a guest domain on the same network using the Dynamic Host Configuration Protocol (DHCP), the guest domain can eventually become unresponsive while running network traffic.
Workaround: Set ip_ire_min_bucket_cnt and ip_ire_max_bucket_cnt to larger values, such as 32, if you have 8 interfaces.
Recovery: Issue an ldm stop-domain ldom command followed by an ldm start-domain ldom command on the guest domain (ldom) in question.