Hello.
I suggest that you need to learn about android network and security model.
Android adopted advanced routing for multinetwork and firewall policy. All
network is managed in netd and controlled by connectivity service. Android
framework network concept is tightly coupled in native area.
See the AOSP code focusing on netid,
System/netd
Fwmark
Networkcontroller
Routecontroller
Framework/base
Connectivitymanager
connectivityservice
networkmanagementservice
Vpn
This command will help you to understand what's going on
# ip rules
# ip route show table all or each tables i rule description
# cat /data/misc/net/rt_tables
# iptables -L -t mangle
# iptables -L -t raw
# iptables -L -t filter
2017. 1. 4. 오전 5:52에 "进无止境" <252648...@qq.com>님이 작성:
I create a virtual network interface on AndroidM:
#ip link add link eth0 name *uzb* addr 00:1e:32:15:60:cf type macvlan
it also prompt "ip: RTNETLINK answers: Operation not supported" until i
open the kernel config ——CONFIG_MACVLAN
but i add ip address for *uzb*(eg: 192.168.1.169)
#ip addr add 192.168.10.169/24 dev uzb
I ping the IP 192.168.10.169 on other PC, i found that there have two ARP
ack for 192.168.10.169 , one is from eth0 , another is from *uzb*
i don't know why? i do same operation on ubuntu, it is ok, very normal
It is bug on Android ?
who can give me any idea???
*The details are as follows:
-------------------------------------------------------------------------------------------------------------------------------------------------------------------*
root@rk3368:/ # ip link add link eth0 name uzb addr 00:1e:32:15:60:cf type
macvlan
root@rk3368:/ #
root@rk3368:/ #
root@rk3368:/ # ip addr add 192.168.10.169/24 dev uzb
root@rk3368:/ # ip link set uzb up
root@rk3368:/ #
root@rk3368:/ #
root@rk3368:/ #
root@rk3368:/ #
root@rk3368:/ #
root@rk3368:/ # ifconfig -a
eth0 Link encap:Ethernet HWaddr 1A:36:01:CC:D6:9D
inet addr:192.168.10.100 Bcast:192.168.10.255
Mask:255.255.255.0
inet6 addr: fd00:aaaa::1836:1ff:fecc:d69d/64 Scope: Global
inet6 addr: fe80::1836:1ff:fecc:d69d/64 Scope: Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:1646 errors:0 dropped:0 overruns:0 frame:0
TX packets:27 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:239587 TX bytes:2562
Interrupt:59
wlan0 Link encap:Ethernet HWaddr 04:E6:76:C3:94:17
BROADCAST MULTICAST MTU:1500 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:0 TX bytes:0
uzb Link encap:Ethernet HWaddr 00:1E:32:15:60:CF
inet addr:192.168.10.169 Bcast:0.0.0.0 Mask:255.255.255.0
inet6 addr: fe80::21e:32ff:fe15:60cf/64 Scope: Link
inet6 addr: fd00:aaaa::21e:32ff:fe15:60cf/64 Scope: Global
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:10 errors:0 dropped:0 overruns:0 frame:0
TX packets:6 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:1327 TX bytes:484
sit0 Link encap:IPv6-in-IPv4
NOARP MTU:1480 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:0 TX bytes:0
lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
inet6 addr: ::1/128 Scope: Host
UP LOOPBACK RUNNING MTU:65536 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:0 TX bytes:0
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