NFS problem at boot-up: "nfsd: RPCPROG_NFS: RPC: Port mapperfailure - RPC: Unable to send"

[Rob]

Hi,

All my PCs are running up-to-date FreeBSD-stable.

I had set up an NFS server (800 MHz) and client (500 MHz),
which was all working fine. At boot-up it nfs-mounts two nfs file systems.

Today I replaced the client 500 MHz with a 2 GHz Pentium 4 PC.
Now the client gives the following during boot:

--------------------------------------------------------
[...]
Doing initial network setup: hostname.
rl0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> mtu 1500
         inet 147.47.254.184 netmask 0xffffff00 broadcast 147.47.254.255
         inet6 fe80::2a0:b0ff:fe0e:3a95%rl0 prefixlen 64 tentative scopeid 0x1
         ether 00:a0:b0:0e:3a:95
         media: Ethernet 10baseT/UTP
         status: active
lo0: flags=8049<UP,LOOPBACK,RUNNING,MULTICAST> mtu 16384
         inet6 ::1 prefixlen 128
         inet6 fe80::1%lo0 prefixlen 64 scopeid 0x2
         inet 127.0.0.1 netmask 0xff000000
add net default: gateway 147.47.254.1
Additional routing options: TCP keepalive=YES.
Routing daemons:.
Mounting NFS file systems:lahaye:/usr/ports: nfsd: RPCPROG_NFS: RPC: Port mapper
  failure - RPC: Unable to send
.
Additional daemons: syslogd.
Doing additional network setup: ntpdate portmap.
Starting final network daemons: nfsiod NFS access cache time=2.
[...etc...]
--------------------------------------------------------


There is the "Mounting NFS file systems:" for a long while before the RPC message
comes. Strangely enough, the nfs file system is mounted at the end of the boot-up;
so why is there this RPC message and the long wait for nfs?

I have no clue what's going on here and have also no idea in what direction I should
go for solving this. Any hints?

Thanks,
Rob.