My in previous email described problem is not caused by IPSEC setup.  I should have 
investigated this much better. :-(
Thanks to Bjoern for his debugging hints.

The 7.0-BETA3 seems to have a problem with puc(4) driver. When I enable the driver with 
kernel configuration

device          puc
nodevice        uart
options         COM_MULTIPORT

I see the following effects:

1. The sio(4) does not attach as in RELENG_6 to the ports provided by puc(4) driver. In 
RELENG_7 it shows as

puc0: <Oxford Semiconductor OX16PCI954 UARTs> port 0xdf00-0xdf1f,0xdec0-0xdedf mem 0xfe6f8000-0xfe6f8fff,0xfe6f7000-0xfe6f7fff irq 21 at device 13.0 on pci2
puc0: Reserved 0x20 bytes for rid 0x10 type 4 at 0xdf00
ioapic0: routing intpin 21 (PCI IRQ 21) to vector 54
puc0: [FILTER]
sio0 on puc0
sio0: type 16550A, console
sio0: [FILTER]
sio1: reserved for low-level i/o

where RELENG_6 shows

puc0: <Oxford Semiconductor OX16PCI954 UARTs> port 0xdf00-0xdf1f,0xdec0-0xdedf mem 0xfe6f8000-0xfe6f8fff,0xfe6f7000-0xfe6f7fff irq 21 at device 13.0 on pci2
sio4: <Oxford Semiconductor OX16PCI954 UARTs> on puc0
sio4: type 16550A
sio4: unable to activate interrupt in fast mode - using normal mode
sio5: <Oxford Semiconductor OX16PCI954 UARTs> on puc0
sio5: type 16550A
sio5: unable to activate interrupt in fast mode - using normal mode
....
sio0: <16550A-compatible COM port> port 0x3f8-0x3ff irq 4 flags 0x10 on acpi0
sio0: type 16550A, console
sio1: reserved for low-level i/o


In RELENG_6 the sio0 and sio1 are the ports on motherboard, the ports on external card are mapped to sio4, sio5 and so on.
In RELENG_7 the 1st port on external card seems to be mapped to sio0 and nothing else.

In both cases the content of /boot/device.hints is:
hint.sio.0.at="isa"
hint.sio.0.port="0x3F8"
hint.sio.0.flags="0x10"
hint.sio.0.irq="4"
hint.sio.1.at="isa"
hint.sio.1.disabled="1"
hint.sio.1.flags="0x40"
hint.sio.1.port="0x2F8"
hint.sio.1.irq="3"
hint.sio.2.at="isa"
hint.sio.2.disabled="1"
hint.sio.2.port="0x3E8"
hint.sio.2.irq="5"
hint.sio.3.at="isa"
hint.sio.3.disabled="1"
hint.sio.3.port="0x2E8"
hint.sio.3.irq="9"


2. The kernel boot is not completed, probably because serial console is remapped.



I'll try to debug this problem further. Or does somebody have an explanation for this 
behaviour?

Regards,
   Frank
-- 
Frank Behrens, Osterwieck, Germany
PGP-key 0x5B7C47ED on public servers available.

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