The problem is the newer broadcom driver, when using the iSCSI offload mode.  VMware and Broadcom will have to publish a fix.   For now just use the SW iSCSI.   
Hello community, We just upgraded to ESXi 5.1.0 build-1021289. We installed MEM 1.1.2 and used it to configure all of the iSCSI network and chose to use our BCM57810 10G cards for offload instead of using the SW initiator. We are currently on firmware 5.2.6. We now see this error constantly in the vmkernel logs.  2013-05-04T21:06:40.074Z cpu4:240833)WARNING: dell_psp_eql_routed: PspEqlReadRoutingTable:1100:Invalid size in page table packet (length 4096, expected 338)2013-05-04T21:06:40.074Z cpu4:240833)WARNING: dell_psp_eql_routed: PspEqlReadRoutingTable:1138:Unable to read page table2013-05-04T21:07:08.085Z cpu4:240833)WARNING: dell_psp_eql_routed: PspEqlReadRoutingTable:1100:Invalid size in page table packet (length 4096, expected 2528)2013-05-04T21:07:08.085Z cpu4:240833)WARNING: dell_psp_eql_routed: PspEqlReadRoutingTable:1138:Unable to read page table2013-05-04T21:07:08.091Z cpu4:240833)WARNING: dell_psp_eql_routed: PspEqlReadRoutingTable:1100:Invalid size in page table packet (length 4096, expected 2528)2013-05-04T21:07:08.091Z cpu4:240833)WARNING: dell_psp_eql_routed: PspEqlReadRoutingTable:1138:Unable to read page table2013-05-04T21:07:08.099Z cpu4:240833)WARNING: dell_psp_eql_routed: PspEqlReadRoutingTable:1100:Invalid size in page table packet (length 4096, expected 2528) ESXi 5.1.0 build-1021289
WARNING: dell_psp_eql_routed: PspEqlReadRoutingTable:1138:Unable to read page 
table