mv /etc/udev/rules.d/70-persistent-net.rules ~/
udevadm test --action=add /sys/class/net/eth0
> starting 'write_net_rules'.
> 'write_net_rules' [12531] exit with return code 1

curl -v http://www.google.by
netstat -np | grep -i curl
> tcp        0      1 192.168.0.3:59216       173.194.40.87:80        SYN_SENT    13244/curl
sudo grep -i "173.194.40.87" /proc/net/ip_conntrack
> 104 SYN_SENT src=192.168.0.3 dst=173.194.40.87 sport=59216 dport=80 [UNREPLIED] src=173.194.40.87 dst=192.168.0.3 sport=80 dport=59216 secctx=null use=2

sudo cat /proc/sys/net/ipv4/ip_local_port_range
>32768	61000

NVRM: GPU at 0000:01:00: GPU-d270cb75-805e-ffa3-dd7f-c170d6a09fb5
NVRM: Xid (0000:01:00): 32, Channel ID 00000000 intr 00008000
NVRM: os_schedule: Attempted to yield the CPU while in atomic or interrupt context
NVRM: os_schedule: Attempted to yield the CPU while in atomic or interrupt context
NVRM: Xid (0000:01:00): 8, Channel 00000001
NVRM: Xid (0000:01:00): 13, 0001 00000000 00009039 00000300 00101100 00000023 (сотни раз)

тип - роутер с wifi точкой
консольный порт - надо
> D-Link DSR-250N - 164$
> D-Link DSR-500N - 271$

+3.3V based TTL level UART <-> USB
> свисток на чипе CP2102 - 25$

USB <-> RS-232
> переходник - 5$
UART <-> RS-232
> паяльник http://habrahabr.ru/post/109395/
> дата кабель от старого телефона с чипом MAX232

sudo pon vpn
sudo ip route add 192.168.1.57 via 192.168.1.47
curl http://192.168.1.57:81

links http://192.168.1.57:81

ip route
default via 192.168.0.1 dev eth0  metric 2 
127.0.0.0/8 via 127.0.0.1 dev lo 
192.168.0.0/24 dev eth0  proto kernel  scope link  src 192.168.0.3  metric 2 
192.168.1.47 dev ppp0  proto kernel  scope link  src 192.168.1.41 
192.168.1.57 via 192.168.1.47 dev ppp0

int snscanf(const char *str, size_t size, const char *format, ...);

echo "abbbc" | grep -P "(?\!a)(.*?)c"
>> grep: unrecognized character after (? or (?-

grep -RPin "\.val[\s]*?(\((?:[^\(\)]++|(?1))*\))(?!\.change)" *

lock
noauth

refuse-pap
refuse-eap
refuse-chap
refuse-mschap

require-mppe-128
debug

pty "pptp vpn.work.com --nolaunchpppd"
name DOMAIN\\username
password password
require-mschap-v2
remotename work
file /etc/ppp/options.work

CHAP authentication succeeded
sent [CCP ConfReq id=0x1 <mppe +H -M +S -L -D -C>]
rcvd [CCP ConfReq id=0x4 <mppe +H -M +S -L -D +C>]
sent [CCP ConfNak id=0x4 <mppe +H -M +S -L -D -C>]
rcvd [CCP ConfAck id=0x1 <mppe +H -M +S -L -D -C>]
rcvd [CCP ConfReq id=0x5 <mppe +H -M +S -L -D -C>]
sent [CCP ConfAck id=0x5 <mppe +H -M +S -L -D -C>]
MPPE 128-bit stateless compression enabled
sent [IPCP ConfReq id=0x1 <compress VJ 0f 01> <addr 0.0.0.0>]
rcvd [LCP ProtRej id=0x6 80 21 01 01 00 10 02 06 00 2d 0f 01 03 06 00 00 00 00]
Protocol-Reject for 'Internet Protocol Control Protocol' (0x8021) received
anon log[ctrlp_disp:pptp_ctrl.c:950]: PPTP_SET_LINK_INFO received from peer_callid 0
anon log[ctrlp_disp:pptp_ctrl.c:953]:   send_accm is FFFFFFFF, recv_accm is FFFFFFFF
anon warn[ctrlp_disp:pptp_ctrl.c:956]: Non-zero Async Control Character Maps are not supported!
rcvd [LCP TermReq id=0x7 "-\nA\37777777702\000<\37777777715t\000\000\000\000"]
LCP terminated by peer (-^JAM-B^@<M-Mt^@^@^@^@)
sent [LCP TermAck id=0x7]
anon log[ctrlp_disp:pptp_ctrl.c:912]: Received Call Clear Request.
Connection terminated.

modules="bonding"

#adsl
config_eth0="null"
#config_eth0="192.168.0.3/24"
#routes_eth0="default via 192.168.0.1"

#3g
config_eth1="null"
#config_eth1="192.168.1.100/24"
#routes_eth1="default via 192.168.1.1"

mode_bond0="0"
miimon_bond0="100"
slaves_bond0="eth0 eth1"
config_bond0="192.168.0.3/16"
routes_bond0="default via 192.168.0.1"
#config_bond0="192.168.1.100/16"
#routes_bond0="default via 192.168.1.1"

config_bond0="192.168.0.3/16"
routes_bond0="default via 192.168.0.1"

config_bond0="192.168.1.100/16"
routes_bond0="default via 192.168.1.1"

emerge --version
Portage 2.1.11.50
emerge -pvuDN --with-bdeps=y world
These are the packages that would be merged, in order:
Calculating dependencies... done!
[ebuild] ...
[ebuild] ...

emerge --version
Portage 2.1.11.51
emerge -pvuDN --with-bdeps=y world
These are the packages that would be merged, in order:
Calculating dependencies... done!

#define _GNU_SOURCE
#include <stdio.h>
#include <stdlib.h>

void read_file ( FILE * file ) {
    size_t  len = 0;
    char *  line = NULL;
    ssize_t bytes_read;
    while ( ( bytes_read = getline ( &line, &len, file ) ) != -1 ) {
        printf ( line );
    }
    free ( line );
}
int main ( void ) {
    FILE *  file = fopen ( "/etc/fstab", "r" );
    read_file ( file );
    fclose ( file );
    return 0;
}

tcc -run test.c
>> # /etc/fstab: static file system information.
>> Segmentation fault

size_t  len  = 0;
char *  line = NULL;

int  hsearch_r  (item, action, **return, *htable)
int  hcreate_r  (nel, *htable)
void hdestroy_r (*htable)

int     hcreate_r  (nel, *htable)
void    hdestroy_r (*htable)
int     hsearch_r  (item, action, **return, *htable, flag)
int     hmatch_r   (*match, last_idx, **return, *htable)
int     hstrstr_r  (*match, last_idx, **return, *htable)
int     hdelete_r  (*key, *htable, flag)
ssize_t hexport_r  (*htable, separator, flag, **responce, size, argc, *argv[])
int     himport_r  (*htable, *env, size, separator, flag, argc, *vars[])
int     hwalk_r    (*htable, *callback);