When I try to install BeautifulSoup4.

I am getting this:

$ pip install beautifulsoup4
Collecting beautifulsoup4
  Retrying (Retry(total=4, connect=None, read=None, redirect=None)) after connection broken by 'NewConnectionError('<pip._vendor.requests.packages.urllib3.connection.VerifiedHTTPSConnection object at 0x7f8f90ec8b50>: Failed to establish a new connection: [Errno 101] Network is unreachable',)': /simple/beautifulsoup4/
  Retrying (Retry(total=3, connect=None, read=None, redirect=None)) after connection broken by 'NewConnectionError('<pip._vendor.requests.packages.urllib3.connection.VerifiedHTTPSConnection object at 0x7f8f90ec84d0>: Failed to establish a new connection: [Errno 101] Network is unreachable',)': /simple/beautifulsoup4/
  Retrying (Retry(total=2, connect=None, read=None, redirect=None)) after connection broken by 'NewConnectionError('<pip._vendor.requests.packages.urllib3.connection.VerifiedHTTPSConnection object at 0x7f8f90ec8dd0>: Failed to establish a new connection: [Errno 101] Network is unreachable',)': /simple/beautifulsoup4/
  Retrying (Retry(total=1, connect=None, read=None, redirect=None)) after connection broken by 'NewConnectionError('<pip._vendor.requests.packages.urllib3.connection.VerifiedHTTPSConnection object at 0x7f8f90ec87d0>: Failed to establish a new connection: [Errno 101] Network is unreachable',)': /simple/beautifulsoup4/
  Retrying (Retry(total=0, connect=None, read=None, redirect=None)) after connection broken by 'NewConnectionError('<pip._vendor.requests.packages.urllib3.connection.VerifiedHTTPSConnection object at 0x7f8f90ec8750>: Failed to establish a new connection: [Errno 101] Network is unreachable',)': /simple/beautifulsoup4/
  Could not find a version that satisfies the requirement beautifulsoup4 (from versions: )
No matching distribution found for beautifulsoup4
You are using pip version 8.1.2, however version 24.1.2 is available.
You should consider upgrading via the 'pip install --upgrade pip' command.

Then if I try to upgrade pip as suggested by the error, I get this:

$ pip install --upgrade pip
Retrying (Retry(total=4, connect=None, read=None, redirect=None)) after connection broken by 'NewConnectionError('<pip._vendor.requests.packages.urllib3.connection.VerifiedHTTPSConnection object at 0x7fc5412a0e10>: Failed to establish a new connection: [Errno 101] Network is unreachable',)': /simple/pip/
Retrying (Retry(total=3, connect=None, read=None, redirect=None)) after connection broken by 'NewConnectionError('<pip._vendor.requests.packages.urllib3.connection.VerifiedHTTPSConnection object at 0x7fc5412a0f90>: Failed to establish a new connection: [Errno 101] Network is unreachable',)': /simple/pip/
Retrying (Retry(total=2, connect=None, read=None, redirect=None)) after connection broken by 'NewConnectionError('<pip._vendor.requests.packages.urllib3.connection.VerifiedHTTPSConnection object at 0x7fc541245110>: Failed to establish a new connection: [Errno 101] Network is unreachable',)': /simple/pip/
Retrying (Retry(total=1, connect=None, read=None, redirect=None)) after connection broken by 'NewConnectionError('<pip._vendor.requests.packages.urllib3.connection.VerifiedHTTPSConnection object at 0x7fc541245290>: Failed to establish a new connection: [Errno 101] Network is unreachable',)': /simple/pip/
Retrying (Retry(total=0, connect=None, read=None, redirect=None)) after connection broken by 'NewConnectionError('<pip._vendor.requests.packages.urllib3.connection.VerifiedHTTPSConnection object at 0x7fc541245410>: Failed to establish a new connection: [Errno 101] Network is unreachable',)': /simple/pip/
Requirement already up-to-date: pip in /usr/lib/python2.7/site-packages
You are using pip version 8.1.2, however version 24.1.2 is available.
You should consider upgrading via the 'pip install --upgrade pip' command.

Please suggest how to install BeautifulSoup4.