diff for duplicates of <1468053400.5007.5.camel@synopsys.com> diff --git a/a/1.txt b/N1/1.txt index 9684ec6..f93078d 100644 --- a/a/1.txt +++ b/N1/1.txt @@ -5,19 +5,19 @@ very recent kernels (4.6.3 as of this writing) and found one interesting behavior that I cannot yet understand and googling din't help here as well. My setup is pretty simple: --------------???????------------------???????------------------------- -| HOST??????|???????| "Dumb AP"??????|???????| Wireless client???????| -| with DHCP |<----->(eth0)?????(wlan0)<----->| attempting to?????????| -| server????|???????|????\ br0 /?????|???????| get settings via DHCP | --------------???????------------------???????------------------------- +------------- ------------------ ------------------------- +| HOST | | "Dumb AP" | | Wireless client | +| with DHCP |<----->(eth0) (wlan0)<----->| attempting to | +| server | | \ br0 / | | get settings via DHCP | +------------- ------------------ ------------------------- * HOST is my laptop with DHCP server that works for sure. * "Dumb AP" is a separate board (I tried ARM-based Wandboard and ARC-based -? AXS10x boards but results are exactly the same) with wired (eth0) and wireless -? (wlan0) network controllers bridged together (br0). That "br0" bridge flawlessly -? gets its settings from DHCP server on host. + AXS10x boards but results are exactly the same) with wired (eth0) and wireless + (wlan0) network controllers bridged together (br0). That "br0" bridge flawlessly + gets its settings from DHCP server on host. * Wireless client could be either a smatrphone or another laptop etc but -? what's important it should be configured to get network settings by DHCP as well. + what's important it should be configured to get network settings by DHCP as well. So what happens "br0" always gets network settings from DHCP server on HOST. That's fine. But wireless client only reliably gets settings from DHCP server @@ -33,12 +33,12 @@ Still looks like enabling of IPv6 fixes that issue. So my question here is: why I see that difference with IPv4 vs IPv6? One sidenote: -? Somehow I figured out that in case of IPv4 so-called routing -? cache is absent (it was removed in Linux kernel 3.6) while with IPv6 it -? still exist. And assuming my hardware is sane and no data gets lost I may -? think that it's really a routing problem and missing routing cache might -? be an answer. Still being a noob in networking stuff I'd like to get a bit -? better explanation of things I see. + Somehow I figured out that in case of IPv4 so-called routing + cache is absent (it was removed in Linux kernel 3.6) while with IPv6 it + still exist. And assuming my hardware is sane and no data gets lost I may + think that it's really a routing problem and missing routing cache might + be an answer. Still being a noob in networking stuff I'd like to get a bit + better explanation of things I see. All thoughts and comments are more than welcome. diff --git a/a/content_digest b/N1/content_digest index 3025ad3..f7ee050 100644 --- a/a/content_digest +++ b/N1/content_digest @@ -1,7 +1,11 @@ - "From\0Alexey.Brodkin@synopsys.com (Alexey Brodkin)\0" + "From\0Alexey Brodkin <Alexey.Brodkin@synopsys.com>\0" "Subject\0DHCP via bridge in case of IPv4\0" "Date\0Sat, 9 Jul 2016 08:37:55 +0000\0" - "To\0linux-snps-arc@lists.infradead.org\0" + "To\0netdev@vger.kernel.org <netdev@vger.kernel.org>\0" + "Cc\0davem@davemloft.net <davem@davemloft.net>" + lede-dev@lists.infradead.org <lede-dev@lists.infradead.org> + linux-kernel@vger.kernel.org <linux-kernel@vger.kernel.org> + " linux-snps-arc@lists.infradead.org <linux-snps-arc@lists.infradead.org>\0" "\00:1\0" "b\0" "Hello,\n" @@ -11,19 +15,19 @@ "behavior that I cannot yet understand and googling din't help here as well.\n" "\n" "My setup is pretty simple:\n" - "-------------???????------------------???????-------------------------\n" - "| HOST??????|???????| \"Dumb AP\"??????|???????| Wireless client???????|\n" - "| with DHCP |<----->(eth0)?????(wlan0)<----->| attempting to?????????|\n" - "| server????|???????|????\\ br0 /?????|???????| get settings via DHCP |\n" - "-------------???????------------------???????-------------------------\n" + "-------------\302\240\302\240\302\240\302\240\302\240\302\240\302\240------------------\302\240\302\240\302\240\302\240\302\240\302\240\302\240-------------------------\n" + "| HOST\302\240\302\240\302\240\302\240\302\240\302\240|\302\240\302\240\302\240\302\240\302\240\302\240\302\240| \"Dumb AP\"\302\240\302\240\302\240\302\240\302\240\302\240|\302\240\302\240\302\240\302\240\302\240\302\240\302\240| Wireless client\302\240\302\240\302\240\302\240\302\240\302\240\302\240|\n" + "| with DHCP |<----->(eth0)\302\240\302\240\302\240\302\240\302\240(wlan0)<----->| attempting to\302\240\302\240\302\240\302\240\302\240\302\240\302\240\302\240\302\240|\n" + "| server\302\240\302\240\302\240\302\240|\302\240\302\240\302\240\302\240\302\240\302\240\302\240|\302\240\302\240\302\240\302\240\\ br0 /\302\240\302\240\302\240\302\240\302\240|\302\240\302\240\302\240\302\240\302\240\302\240\302\240| get settings via DHCP |\n" + "-------------\302\240\302\240\302\240\302\240\302\240\302\240\302\240------------------\302\240\302\240\302\240\302\240\302\240\302\240\302\240-------------------------\n" "\n" "* HOST is my laptop with DHCP server that works for sure.\n" "* \"Dumb AP\" is a separate board (I tried ARM-based Wandboard and ARC-based\n" - "? AXS10x boards but results are exactly the same) with wired (eth0) and wireless\n" - "? (wlan0) network controllers bridged together (br0). That \"br0\" bridge flawlessly\n" - "? gets its settings from DHCP server on host.\n" + "\302\240 AXS10x boards but results are exactly the same) with wired (eth0) and wireless\n" + "\302\240 (wlan0) network controllers bridged together (br0). That \"br0\" bridge flawlessly\n" + "\302\240 gets its settings from DHCP server on host.\n" "* Wireless client could be either a smatrphone or another laptop etc but\n" - "? what's important it should be configured to get network settings by DHCP as well.\n" + "\302\240 what's important it should be configured to get network settings by DHCP as well.\n" "\n" "So what happens \"br0\" always gets network settings from DHCP server on HOST.\n" "That's fine. But wireless client only reliably gets settings from DHCP server\n" @@ -39,16 +43,16 @@ "So my question here is: why I see that difference with IPv4 vs IPv6?\n" "\n" "One sidenote:\n" - "? Somehow I figured out that in case of IPv4 so-called routing\n" - "? cache is absent (it was removed in Linux kernel 3.6) while with IPv6 it\n" - "? still exist. And assuming my hardware is sane and no data gets lost I may\n" - "? think that it's really a routing problem and missing routing cache might\n" - "? be an answer. Still being a noob in networking stuff I'd like to get a bit\n" - "? better explanation of things I see.\n" + "\302\240 Somehow I figured out that in case of IPv4 so-called routing\n" + "\302\240 cache is absent (it was removed in Linux kernel 3.6) while with IPv6 it\n" + "\302\240 still exist. And assuming my hardware is sane and no data gets lost I may\n" + "\302\240 think that it's really a routing problem and missing routing cache might\n" + "\302\240 be an answer. Still being a noob in networking stuff I'd like to get a bit\n" + "\302\240 better explanation of things I see.\n" "\n" "All thoughts and comments are more than welcome.\n" "\n" "Regards,\n" Alexey -8dab0dec38e203988df6027b64d47b23a52c35c8c86ce9a0eddffccae29a44e5 +4095199694c81ce5bfb149c30e8b0bd937bafa17248bea08f74e896f413ef642
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