When looking at network packet pools using NDIS WinDbg extension we might see increased number of allocated blocks possibly correlated with network problems, for example:
0: kd> !ndiskd.pktpools * normal Pool Allocator BlocksAllocated BlockSize PktsPerBlock PacketLength 8a467e20 b9090f96 0×1 0×1000 0×14 0xc8 tcpip!ARPRegister+119 8a491460 ba4eea56 0×1 0×1000 0×14 0xc8 wanarp!WanpInitializeNdis+a8 8a466508 b905d368 0×1 0×1000 0xd 0×138 tcpip!InitForwardingPools+53 8a373578 b905becb 0×3 0×1000 0×11 0xe8 tcpip!AllocIPPacketList+59 8a466580 b9095ac5 0×1 0×1000 0xe 0×118 tcpip!IPInit+e0 8a460958 bac40a97 0xb 0×1000 0×14 0xc8 vmxnet+a97
0: kd> !ndiskd.pktpools * no sent packets Pool Allocator BlocksAllocated BlockSize PktsPerBlock PacketLength 8a467e20 b9090f96 0×1 0×1000 0×14 0xc8 tcpip!ARPRegister+119 8a491460 ba4eea56 0×1 0×1000 0×14 0xc8 wanarp!WanpInitializeNdis+a8 8a466508 b905d368 0×1 0×1000 0xd 0×138 tcpip!InitForwardingPools+53 8a373578 b905becb 0xa3 0×1000 0×11 0xe8 tcpip!AllocIPPacketList+59 8a466580 b9095ac5 0×1 0×1000 0xe 0×118 tcpip!IPInit+e0 8a460958 bac40a97 0×9b 0×1000 0×14 0xc8 vmxnet+a97