because it JUST WORKS.

like this (NAT router with ipv4, will be 6, 2 ethernets,  named, sshd,
cron &others to send me logs etc..). 230kbps modem on com2.

and it works PERFECT at full speed on 386DX/40.


cpu0: Intel 386DX (386-class)
total memory = 7808 KB
avail memory = 6236 KB
using 64 buffers containing 256 KB of memory
mainbus0 (root)
isa0 at mainbus0
ep0 at isa0 port 0x300-0x30f irq 10: 3Com 3C509 Ethernet
ep0: address 00:a0:24:55:6b:24, 8KB byte-wide FIFO, 1:1 Rx:Tx split
ep0: 10baseT, 10base5, 10base2 (default 10baseT)
ep1 at isa0 port 0x330-0x33f irq 12: 3Com 3C509 Ethernet
ep1: address 00:60:8c:df:f8:1a, 8KB byte-wide FIFO, 5:3 Rx:Tx split
ep1: 10baseT, 10base5 (default 10baseT)
com0 at isa0 port 0x3f8-0x3ff irq 4: ns8250 or ns16450, no fifo
com1 at isa0 port 0x2f8-0x2ff irq 3: ns8250 or ns16450, no fifo
com2 at isa0 port 0x3e8-0x3ef irq 5: ns16550a, working fifo
com3 at isa0 port 0x2e8-0x2ef irq 9: ns16550a, working fifo
wdc0 at isa0 port 0x1f0-0x1f7 irq 14
wd0 at wdc0 channel 0 drive 0: <Conner Peripherals 40MB - CP3044>
wd0: drive supports 16-sector pio transfers, chs addressing
wd0: 42120 KB, 1053 cyl, 2 head, 40 sec, 512 bytes/sect x 84240 sectors
lpt0 at isa0 port 0x378-0x37b irq 7
pc0 at isa0 port 0x60-0x6f irq 1: color
pc0: console
biomask e945 netmask fd45 ttymask fdc7
boot device: wd0
root on wd0a dumps on wd0b
IP Filter: v3.4.9 initialized.  Default = pass all, Logging = disabled


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Instead of asking why a piece of software is using "1970s technology,"
start asking why software is ignoring 30 years of accumulated wisdom.