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Thread: periodically interrupted Internet

  1. #1
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    Default periodically interrupted Internet

    From version 11.3 to 11.4 now often occurs after a problem has already become annoying! My computer connects to intertet through a router and sometimes after about 4, 5 hours going through the browser so I can not reach Google or someone else's server Skype only stays connected!
    This is not a hardware problem occurs because even after changing the router and the computer problem remains!
    When this happens the router has access to the Internet and other computer via wifi can connect without a problem!
    Please for ideas on how to figure out where the problem comes?
    I attach the output of dmesg:

    Code:
    [40285.897112] SFW2-INext-ACC-TCP IN=eth0 OUT= MAC=1c:6f:65:81:21:73:00:1e:65:90:c9:a6:08:00 SRC=192.168.1.102 DST=192.168.1.100 LEN=60 TOS=0x00 PREC=0x00 TTL=64 ID=57753 DF PROTO=TCP SPT=44432 DPT=22 WINDOW=4380 RES=0x00 SYN URGP=0 OPT (020405B40402080A001F96780000000001030307)
    I checked this code in google and found that a similar prolem had people from the version 10.3 but I do not remember then I had this problem occur examples of 11,3

    Please for ideas on how to figure out where the problem comes?
    openSUSE Tumbleweed KDE
    Linux user #543309
    http://cazadordevarna-kennel.com/suse/

  2. #2
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    Default Re: periodically interrupted Internet

    Quote Originally Posted by NikolaiSS View Post
    From version 11.3 to 11.4 now often occurs after a problem has already become annoying! My computer connects to intertet through a router and sometimes after about 4, 5 hours going through the browser so I can not reach Google or someone else's server Skype only stays connected!
    This is not a hardware problem occurs because even after changing the router and the computer problem remains!
    When this happens the router has access to the Internet and other computer via wifi can connect without a problem!
    Please for ideas on how to figure out where the problem comes?
    I attach the output of dmesg:

    Code:
    [40285.897112] SFW2-INext-ACC-TCP IN=eth0 OUT= MAC=1c:6f:65:81:21:73:00:1e:65:90:c9:a6:08:00 SRC=192.168.1.102 DST=192.168.1.100 LEN=60 TOS=0x00 PREC=0x00 TTL=64 ID=57753 DF PROTO=TCP SPT=44432 DPT=22 WINDOW=4380 RES=0x00 SYN URGP=0 OPT (020405B40402080A001F96780000000001030307)
    I checked this code in google and found that a similar prolem had people from the version 10.3 but I do not remember then I had this problem occur examples of 11,3

    Please for ideas on how to figure out where the problem comes?
    The code You posted is irrelevant. It is some firewall log entry I believe (it's almost impossible for firewall rules to change over time by themselves).

    If Skype works than it looks like a DNS problem because Skype does not need DNS to work.
    Next time, when You get the disruption please try to ping 8.8.4.4 (public google DNS server) and post the output of :
    Code:
    cat /etc/resolv.conf
    It also might be that You have ipv6 enabled and something among the way does not handle ipv6 DNS requests properly. Disabling ipv6 might solve the problem or have no effect at all if the problem lies somwhere esle.

    Best regards,
    Greg
    Best regards,
    Greg

  3. #3
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    Default Re: periodically interrupted Internet

    Thanks for the reply, I think you are right about everything!
    openSUSE Tumbleweed KDE
    Linux user #543309
    http://cazadordevarna-kennel.com/suse/

  4. #4
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    Default Re: periodically interrupted Internet

    Quote Originally Posted by NikolaiSS View Post
    Thanks for the reply, I think you are right about everything!
    I sure hope so lets just wait and see.

    Best regards,
    Greg
    Best regards,
    Greg

  5. #5
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    Default Re: periodically interrupted Internet

    Unfortunately the problem is not just in this...!

    I changed the router DNS to OpenDNS 208.67.222.222 and 208.67.220.220 also waved IPv6! After nine hours running smoothly, it appears the problem!
    I followed> ping 208.67.222.222 - had a connection
    cat / etc / resolv.conf shows these IP addresses

    Now switched to google dns 8.8.4.4
    openSUSE Tumbleweed KDE
    Linux user #543309
    http://cazadordevarna-kennel.com/suse/

  6. #6
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    Default Re: periodically interrupted Internet

    Quote Originally Posted by NikolaiSS View Post
    Unfortunately the problem is not just in this...!

    I changed the router DNS to OpenDNS 208.67.222.222 and 208.67.220.220 also waved IPv6! After nine hours running smoothly, it appears the problem!
    I followed> ping 208.67.222.222 - had a connection
    cat / etc / resolv.conf shows these IP addresses

    Now switched to google dns 8.8.4.4
    I'm afraid the switch won't do any good. The problem might be something else I'm afraid but I have a few more questions to ask.

    How did You disable ipv6 ?
    What is the contents of this file on your system ?
    Code:
    /etc/sysctl.conf
    Did You disable ipv6 in your internet browser ?

    Are You able to ping something by it's DNS name when this happens ? Here's an example output :
    Code:
    ~> ping lwn.net
    PING lwn.net (72.51.34.34) 56(84) bytes of data.
    64 bytes from sb.lwn.net (72.51.34.34): icmp_req=1 ttl=49 time=191 ms
    64 bytes from sb.lwn.net (72.51.34.34): icmp_req=2 ttl=49 time=190 ms
    64 bytes from sb.lwn.net (72.51.34.34): icmp_req=3 ttl=49 time=187 ms
    ^C
    --- lwn.net ping statistics ---
    3 packets transmitted, 3 received, 0% packet loss, time 2001ms
    rtt min/avg/max/mdev = 187.189/189.692/191.718/1.879 ms
    Best regards,
    Greg
    Best regards,
    Greg

  7. #7
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    Default Re: periodically interrupted Internet

    I disable ipv6 using yast>network settings,mozilla IPv6 disable using about:config.

    /etc/sysctl.conf

    niki@box:~> sudo cat /etc/sysctl.conf
    # Disable response to broadcasts.
    # You don't want yourself becoming a Smurf amplifier.
    net.ipv4.icmp_echo_ignore_broadcasts = 1
    # enable route verification on all interfaces
    net.ipv4.conf.all.rp_filter = 1
    # disable IPv6 completely
    net.ipv6.conf.all.disable_ipv6 = 1
    # enable IPv6 forwarding
    #net.ipv6.conf.all.forwarding = 1
    # increase the number of possible inotify(7) watches
    fs.inotify.max_user_watches = 65536
    # avoid deleting secondary IPs on deleting the primary IP
    net.ipv4.conf.default.promote_secondaries = 1
    net.ipv4.conf.all.promote_secondaries = 1
    When this happens
    I ping zamunda.net and it`s ok!
    openSUSE Tumbleweed KDE
    Linux user #543309
    http://cazadordevarna-kennel.com/suse/

  8. #8
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    Default Re: periodically interrupted Internet

    Quote Originally Posted by NikolaiSS View Post
    I disable ipv6 using yast>network settings,mozilla IPv6 disable using about:config.
    Looks like You have disabled ipv6 cprrectly.
    Quote Originally Posted by NikolaiSS View Post
    When this happens
    I ping zamunda.net and it`s ok!
    What does this mean ? You get a disruption in access to google.com and all the other sites except zamunda.net ?

    Best regards,
    Greg
    Best regards,
    Greg

  9. #9
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    Default Re: periodically interrupted Internet

    What does this mean ? You get a disruption in access to google.com and all the other sites except zamunda.net ?
    No, i ping google too ! Browser only ,and vlc connection whit video streaming site not working !I think ktorrent has something to do with what happens.
    Because lately does not work properly. Once the torrent is deleted is displayed again and so several times. Today I noticed that maybe has something to do
    openSUSE Tumbleweed KDE
    Linux user #543309
    http://cazadordevarna-kennel.com/suse/

  10. #10
    Join Date
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    Default Re: periodically interrupted Internet

    Quote Originally Posted by NikolaiSS View Post
    No, i ping google too ! Browser only ,and vlc connection whit video streaming site not working !I think ktorrent has something to do with what happens.
    Because lately does not work properly. Once the torrent is deleted is displayed again and so several times. Today I noticed that maybe has something to do
    Ok I think I had the same problem. Had to disable ktorrent using the μTP protocol. When I get home I can give You a screenshot of the setting but I'm sure You will find the setting yourself.

    Best regards,
    Greg
    Best regards,
    Greg

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