PPTP: Добавление ip адреса на интерфейс 0

freebsd 4.9

ip 10.10.6.162, gw 10.10.6.1, server vpn 172.16.1.38

поставил из портов pptpclient

/etc/ppp/ppp.conf

vpn:

set authname «user»

set authkey «pass»

set timeout 0

set ifaddr 0 0

add default HISADDR

netstat -rn содержит такие строки

default 10.10.6.1 UGSc

172.16.1.38 10.10.6.1 UGHS

/usr/local/sbin/pptp 172.16.1.38 vpn &

cat /var/log/ppp.log

Oct 3 21:51:55 bsd49 ppp[23743]: Phase: Using interface: tun0

Oct 3 21:51:55 bsd49 ppp[23743]: Phase: deflink: Created in closed state

Oct 3 21:51:55 bsd49 ppp[23743]: Phase: PPP Started (direct mode).

Oct 3 21:51:55 bsd49 ppp[23743]: Phase: bundle: Establish

Oct 3 21:51:55 bsd49 ppp[23743]: Phase: deflink: closed -> opening

Oct 3 21:51:55 bsd49 ppp[23743]: Phase: deflink: Connected!

Oct 3 21:51:55 bsd49 ppp[23743]: Phase: deflink: opening -> carrier

Oct 3 21:51:56 bsd49 ppp[23743]: Phase: deflink: carrier -> lcp

Oct 3 21:51:56 bsd49 ppp[23743]: Phase: bundle: Authenticate

Oct 3 21:51:56 bsd49 ppp[23743]: Phase: deflink: his = CHAP 0×81, mine = none

Oct 3 21:51:56 bsd49 ppp[23743]: Phase: Chap Input: CHALLENGE (16 bytes)

Oct 3 21:51:56 bsd49 ppp[23743]: Phase: Chap Output: RESPONSE (6/0568)

Oct 3 21:51:56 bsd49 ppp[23743]: Phase: Chap Input: SUCCESS (S=12A71949EA48FF339CECA958F4A17D0BC052E054)

Oct 3 21:51:56 bsd49 ppp[23743]: Phase: deflink: lcp -> open

Oct 3 21:51:56 bsd49 ppp[23743]: Phase: bundle: Network

Oct 3 21:51:57 bsd49 ppp[23743]: Warning: iface add: ioctl(SIOCAIFADDR, 192.168.94.7 -> 172.16.1.38): File exists

Oct 3 21:51:57 bsd49 ppp[23743]: Error: ipcp_InterfaceUp: unable to set ip address

Oct 3 21:51:59 bsd49 ppp[23743]: Phase: deflink: open -> lcp

Oct 3 21:51:59 bsd49 ppp[23743]: Phase: bundle: Terminate

Oct 3 21:51:59 bsd49 ppp[23743]: Phase: Signal 15, terminate.

Oct 3 21:52:02 bsd49 ppp[23743]: Phase: deflink: Disconnected!

Oct 3 21:52:02 bsd49 ppp[23743]: Phase: deflink: Connect time: 7 secs: 488 octets in, 506 octets out

Oct 3 21:52:02 bsd49 ppp[23743]: Phase: deflink: 15 packets in, 14 packets out

Oct 3 21:52:02 bsd49 ppp[23743]: Phase: total 142 bytes/sec, peak 306 bytes/sec on Sun Oct 3 21:51:57 2004

Oct 3 21:52:02 bsd49 ppp[23743]: Phase: deflink: lcp -> closed

Oct 3 21:52:02 bsd49 ppp[23743]: Phase: bundle: Dead

Oct 3 21:52:02 bsd49 ppp[23743]: Phase: PPP Terminated (normal).

почему возникает ошибка добавления ip на интерфейс?