Arch Linux

funkypotatoe

Member

Registered: 2012-03-23

Posts: 47

dnsmasq issues?

Hi. I'm trying to set up wi-fi spot using hostapd & dnsmasq. Everything seems to be okay, but dnsmasq doesn't assign an ip address to client machine.

hostapd.conf (no encryption atm., just to test conf):

interface=wlan0
driver=nl80211
logger_syslog=-1
logger_syslog_level=2
logger_stdout=-1
logger_stdout_level=2
ssid=test
hw_mode=g
channel=6

dnsmasq.conf:

interface=wlan0
dhcp-range=192.168.0.50,192.168.0.150,255.255.255.0,6h

console output:

[*@* ~]$ sudo /usr/bin/dnsmasq -qd
dnsmasq: started, version 2.60 cachesize 150
dnsmasq: compile time options: IPv6 GNU-getopt DBus no-i18n no-IDN DHCP DHCPv6 no-Lua TFTP no-conntrack
dnsmasq-dhcp: DHCP, IP range 192.168.0.50 -- 192.168.0.150, lease time 12h
dnsmasq: reading /etc/resolv.conf
dnsmasq: using nameserver 8.8.8.8#53
dnsmasq: using nameserver 8.8.4.4#53

3: wlan0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP qlen 1000
    link/ether 00:*:*:*:*:* brd ff:ff:ff:ff:ff:ff
    inet6 *::*:*:*:*/64 scope link 
       valid_lft forever preferred_lft forever
8: mon.wlan0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UNKNOWN qlen 1000
    link/ieee802.11/radiotap 00:*:*:*:*:* brd ff:ff:ff:ff:ff:ff

wireshark shows 0 outgoing packets, only DHCP Discover packets from client machine.
What did i miss ?

funkypotatoe

Member

Registered: 2012-03-23

Posts: 47

Re: dnsmasq issues?

tried with "ifconfig wlan0 192.168.0.1 netmask 255.255.255.0" before hostapd & dnsmasq.

3: wlan0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP qlen 1000
    link/ether 00:*:*:*:*:* brd ff:ff:ff:ff:ff:ff
    inet 192.168.0.1/24 brd 192.168.0.255 scope global wlan0
    inet6 fe80::*:*:*:*/64 scope link 
       valid_lft forever preferred_lft forever

still no luck

mr.MikyMaus

Member

From: disabled

Registered: 2006-03-31

Posts: 285

Re: dnsmasq issues?

Netmask part of dhcp-range parm is superfluous in your case, try to drop it. It's also strange that in the conf you have a lease time of 6h while the dnsmasq daemon says 12h on start.

Also if you set both interfaces manually, can you ping each other?

---

What happened to Arch's KISS? systemd sure is stupid but I must have missed the simple part ...

... and who is general Failure and why is he reading my harddisk?

funkypotatoe

Member

Registered: 2012-03-23

Posts: 47

Re: dnsmasq issues?

Netmask part of dhcp-range parm is superfluous in your case, try to drop it. It's also strange that in the conf you have a lease time of 6h while the dnsmasq daemon says 12h on start.

Also if you set both interfaces manually, can you ping each other?

Hi, thanks for reply.
Changed "dhcp-range=192.168.0.50,192.168.0.150,255.255.255.0,6h" to "dhcp-range=192.168.0.10,192.168.0.30,6h", same result. Different lease time is my copy/paste fault, i've changed lease time, to make sure dnsmasq reading from the same conf file i've edited. If i connect my wlan0 (intranet) with eth0 (ISP) with bridge, my LAN client machine getting an ip from my ISP. Wireshark shows ping-request packets coming from LAN to my wlan0 interface, but theres no ping-reply packets (in Wireshark/Lan machine). DHCPd seems to work fine with ip address offering, but no ping-reply's.

Apr  4 13:42:09 localhost kernel: [ 6107.199016] IICMP: IN=br0 OUT= PHYSIN=wlan0 MAC=00:*:*:*:*:*:*:*:*:*:*:*:* SRC=192.168.0.10 DST=192.168.0.1 LEN=84 TOS=0x00 PREC=0x00 TTL=64 ID=0 DF PROTO=ICMP TYPE=8 CODE=0 ID=700 SEQ=247 
Apr  4 13:42:09 localhost kernel: [ 6107.199073] OICMP: IN= OUT=wlan0 SRC=192.168.0.1 DST=192.168.0.10 LEN=84 TOS=0x00 PREC=0x00 TTL=64 ID=34014 PROTO=ICMP TYPE=0 CODE=0 ID=700 SEQ=247 

Both machines has all policies in ACCEPT mode, iptables -F/-X.

Last edited by funkypotatoe (2012-04-04 13:00:13)