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I have the same problem that cannot ping each other by name and solve this problem by doing this：

1.In ros master PC shell input ROS_IP before you run roscore service 10.0.0.14 is your local ip.

u64@u64-rosmaster:~$ export ROS_IP=10.0.0.14

u64@u64-rosmaster:~$ roscore

2.edit ros master PC/etc/hosts add your phone ip and name like

10.0.0.15 phone

good luck!

I have the same problem that cannot ping each other by name and solve this problem by doing this：

1.In ros master PC shell input ROS_IP before you run roscore service 10.0.0.14 is your local ip.

u64@u64-rosmaster:~$ export ROS_IP=10.0.0.14

u64@u64-rosmaster:~$ roscore

2.edit ros master PC/etc/hosts PC /etc/hosts add your phone ip and name like

10.0.0.15 phone

good luck!

I have the same problem that cannot ping each other by name and solve this problem by doing this：

1.In ros master PC shell input setup ROS_IP before you run roscore service 10.0.0.14 is your local ip.

u64@u64-rosmaster:~$ export ROS_IP=10.0.0.14

u64@u64-rosmaster:~$ roscore

2.edit ros master PC /etc/hosts add your phone ip and name like

10.0.0.15 phone

good luck!