<div dir="ltr">Hi,<div>I have tried modem manager utility to setup dual stack connection for EM7430 using following steps, seems am able to create a dual stack connection. I have got queries to understand, Can you anyone share the ideas/comments.</div><div> </div><div># mmcli -L 0 Found 1 modems: /org/freedesktop/ModemManager1/Modem/1 [Sierra Wireless, Incorporated] EM7430 # # mmcli -m 1 --simple-connect="apn=internet,ip-type=ipv4v6" successfully connected the modem # mmcli -b 0 Bearer '/org/freedesktop/ModemManager1/Bearer/0' ------------------------- Status | connected: 'yes' | suspended: 'no' | interface: 'wwan0' | IP timeout: '20' ------------------------- Properties | apn: 'internet' | roaming: 'allowed' | IP type: 'ipv4v6' | user: 'none' | password: 'none' | number: 'none' | Rm protocol: 'unknown' ------------------------- IPv4 configuration | method: 'static' | address: '192.168.1.11' | prefix: '29' | gateway: '192.168.1.12' | DNS: '192.168.1.12', '192.168.1.12' | MTU: '1500' ------------------------- IPv6 configuration | method: 'static' | address: '2001::2:9153:6c2f:89af:a96d' | prefix: '64' | gateway: '2001::2:c0f7:2c41:b231:ae43' | DNS: '2001:0:0:2::2' | MTU: '1500' ------------------------- Stats | Duration: '0' | Bytes received: 'N/A' | Bytes transmitted: 'N/A' # # # # # echo Y > /sys/class/net/wwan0/qmi/raw_ip # # ifconfig wwan0 up # # udhcpc -i wwan0 udhcpc: started, v1.26.2 udhcpc: sending discover udhcpc: sending select for 192.168.1.11 udhcpc: lease of 192.168.1.11 obtained, lease time 7200 deleting routers adding dns 192.168.1.12 adding dns 192.168.1.12 Recorded lease to [/var/run/udhcpc-wwan0.lease] # # # # ifconfig wwan0 2001::2:9153:6c2f:89af:a96d/64 # # ping -I wwan0 -6 2001:0:0:2::2 PING 2001:0:0:2::2(2001:0:0:2::2) 56 data bytes 64 bytes from 2001:0:0:2::2: icmp_seq=1 ttl=128 time=1.36 ms 64 bytes from 2001:0:0:2::2: icmp_seq=6 ttl=128 time=0.517 ms 64 bytes from 2001:0:0:2::2: icmp_seq=7 ttl=128 time=0.493 ms 64 bytes from 2001:0:0:2::2: icmp_seq=8 ttl=128 time=0.641 ms 64 bytes from 2001:0:0:2::2: icmp_seq=9 ttl=128 time=0.765 ms 64 bytes from 2001:0:0:2::2: icmp_seq=10 ttl=128 time=0.948 ms 64 bytes from 2001:0:0:2::2: icmp_seq=11 ttl=128 time=0.711 ms 64 bytes from 2001:0:0:2::2: icmp_seq=12 ttl=128 time=0.489 ms 1.Is this the IPV6(2001::2:9153:6c2f:89af:a96d) address assigned through mmcli is dhcp-slaac address? Am only able to assign it statically. 2. if i understand qmilci has the limitation on dual stack connection, is this right? </div></div><div class="gmail_extra"> <div class="gmail_quote">On Wed, Apr 12, 2017 at 2:38 PM, Aleksander Morgado <<a href="mailto:aleksander@aleksander.es" target="_blank">aleksander@aleksander.es</a>> wrote: <blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div class="HOEnZb"><div class="h5">On Wed, Apr 12, 2017 at 9:14 PM, Dan Williams <<a href="mailto:dcbw@redhat.com">dcbw@redhat.com</a>> wrote: >> Have tried both the options but i still get the policy mismatch error >> when >> i try to activate for ip-type=6, even the profiles support both IPV4 >> and >> IPV6, it allows to create a network either one of them. >> >> It should be like this right, if we don't specify the ip-type option >> as >> part of start-network should be able to transmit message using both >> IPV4 >> and IPV6. > > Last I checked with Verizon (over a year ago), specifically with > VZWINTERNET on an MC7750 and UML290, the behavior that you are doing > was how the Verizon Broadband Access Manager (VZAM) operated to acquire > an IPv4 and IPv6 address. And yes, the modem had VZWINTERNET with a > V4V6 PDP context as shown by CGDCONT. > > 1) create a WDS client > 2) call StartNetwork with ip-type=v4 > 3) get current settings with client from #1 > 4) create a new WDS client > 5) call StartNetwork with ip-type=v6 > 6) get current settings with client from #4 > > Both v4 and v6 addresses get configured on the same network interface, > but are acquired through different WDS clients and StartNetwork > requests. As far as I know, QMI has no "v4v6" ip-type attribute for > StartNetwork. > > Perhaps that's changed, would be nice to verify what VZAM or other QMI- > based Windows connection managers are doing these days to get a dual- > stack connection. </div></div>In ModemManager the flow is a bit different to request this same setup. Instead of calling StartNetwork with a given "IP Family Preference" TLV (as you would have with --wds-start-network="ip-type=X"), we instead call the "WDS Set IP Family" command before calling "WDS Start Network" and if that succeeds, we won't add the TLV. Only if the "WDS Set IP Family" command fails, we do set the TLV. We could test this approach if we had a --wds-set-ip-family command in qmicli, but we don't yet; patches welcome :) -- Aleksander <a href="https://aleksander.es" rel="noreferrer" target="_blank">https://aleksander.es</a> </blockquote></div> </div>