My sk0 is rendered useless when flooded with multicast join requests. Here is my setup: FreeBSD server.mcneil.com 6.0-STABLE FreeBSD 6.0-STABLE #94: Mon Nov 7 23:51:05 PST 2005 root@server.mcneil.com:/usr/obj/usr/src/sys/AMD64 amd64 CPU: AMD Athlon(tm) 64 X2 Dual Core Processor 3800+ (2009.79-MHz K8-class CPU) Origin = "AuthenticAMD" Id = 0x20f32 Stepping = 2 Features=0x178bfbff<FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CLFLUSH,MMX,FXSR,SSE,SSE2,HTT> Features2=0x1<SSE3> AMD Features=0xe2500800<SYSCALL,NX,MMX+,<b25>,LM,3DNow+,3DNow> real memory = 2147418112 (2047 MB) avail memory = 2064441344 (1968 MB) FreeBSD/SMP: Multiprocessor System Detected: 2 CPUs cpu0 (BSP): APIC ID: 0 cpu1 (AP): APIC ID: 1 skc0: <Marvell Gigabit Ethernet> port 0xa800-0xa8ff mem 0xf5000000-0xf5003fff irq 19 at device 11.0 on pci2 skc0: Marvell Yukon Lite Gigabit Ethernet rev. (0x9) sk0: <Marvell Semiconductor, Inc. Yukon> on skc0 sk0: Ethernet address: 00:14:85:85:27:b3 miibus1: <MII bus> on sk0 e1000phy0: <Marvell 88E1000 Gigabit PHY> on miibus1 e1000phy0: 10baseT, 10baseT-FDX, 100baseTX, 100baseTX-FDX, 1000baseTX-FDX, auto I'm streaming MPEG with vls to a target device that is running Linux. Something goes wrong (not related) and I stop the streaming, but the Linux target appears to start flooding multicast join requests. When this happens, my sk0 nic suddenly becomes useless. I get messages like: sk0: watchdog timeout sk0: link state changed to DOWN sk0: watchdog timeout dhcpd: send_packet: No buffer space available If I kill my Linux target, the interface recovers just fine. The sk0 is attached to a gigE linksys switch which is attached to a 100BT switch which is attached to the Linux target. There should be no way that it could use up all the resources on my machine. Sean