# ---------
# default WIN11

C:\Users\ORJ>netsh interface ipv6 show prefixpolicies

Precedence  Label  Prefix
----------  -----  --------------------------------
        50      0  ::1/128
        40      1  ::/0
        35      4  ::ffff:0:0/96
        30      2  2002::/16
         5      5  2001::/32
         3     13  fc00::/7
         1     11  fec0::/10
         1     12  3ffe::/16
         1      3  ::/96

# ---------
# my config WIN11

C:\Users\ORJ>netsh interface ipv6 show prefixpolicies

Précédence  Libellé  Préfixe
----------  -------  --------------------------------
        50      0  ::1/128
        48      1  ::/0
        45     13  fc00::/7
        44     11  fec0::/10
        30      2  2002::/16
         5      5  2001::/32
         2      3  ::/96
         2     12  3ffe::/16
         1      4  ::ffff:0:0/96


# ---------
# Create a file "ip-prefixpolicies.bat" paste it there and click on it 'Open as administrator' if you want to apply the changes below:

# lo (localhost)
netsh interface ipv6 set prefixpolicy     ::1/128           50      0 
# Default Unicast
netsh interface ipv6 set prefixpolicy     ::/0              48      1
# ULA (lan IPv6) Unique Local Address
netsh interface ipv6 set prefixpolicy     fc00::/7          45      13 
# SLAN (secure lan) Site-Local Address Network
netsh interface ipv6 set prefixpolicy     fec0::/10         44      11 
# 6to4
netsh interface ipv6 set prefixpolicy     2002::/16         30      2
# Teredo tunneling
netsh interface ipv6 set prefixpolicy     2001::/32         5       5 
# 6bone (returned)
netsh interface ipv6 set prefixpolicy     3ffe::/16         2      12 
# IPv4-compatible addresses (deprecated)
netsh interface ipv6 set prefixpolicy     ::/96             2      3 
# IPv4-mapped IPv6 address
netsh interface ipv6 set prefixpolicy     ::ffff:0:0/96     1      4 


# ---------
# reset to default:

netsh interface ipv6 reset